ThinkPad R series

ThinkPad R series

ThinkPad R51 15"
Developer	IBM (2001–2005) Lenovo (2005–2010) (2018 [1] -present [2] only for Chinese Markets)
Type	Mid-range Laptop (Rxx), budget Laptop (Rxxi, Rxxe)
Release date	October 2001;23 years ago (2001-10)
Operating system	Microsoft Windows
Predecessor	ThinkPad 300 series
Successor	ThinkPad E series, ThinkPad L series, ThinkPad SL series

The ThinkPad R Series is a line of budget to mid-range laptop computers released as a successor to the ThinkPad 300 Series originally developed by IBM from 2001 until 2005 when they sold their consumer PC division to Lenovo in 2005. It was then developed by Lenovo from 2005 to 2010 when it was discontinued in favor of having multiple different models for the different market segments that the R series originally occupied.

IBM originally released the Thinkpad R Series (Starting with the R30) as the mid-range mainstream model of the ThinkPad brand. It was conceived as a laptop "for the business executive working on a budget - a road warrior with an office network whose out-of-office work rarely goes beyond running PowerPoint shows or demonstrating spreadsheets". ^[3] A laptop created as the T series but lower end, the R series computers had IBM make sacrifices in materials and construction (notably the lack of a magnesium midframe and rubberized metal lid) which higher end models of ThinkPad like the T series had. This, along with lower performance configurations when compared to the T series allowed the R series to become the lower end regular laptop model of the ThinkPad line.

Despite having a cheaper build when compared to the higher end T series of its time, it still received favorable reviews. In a review on the ThinkPad R40, CNET gave the laptop a score of 8.2, ^[4] writing in their summary statement that "Good performance, along with great design and battery life, make the ThinkPad R40 a trusted friend for the traveler and the desk jockey". ^[4] Starting from the R50, it became completely based on the T series (instead of just looking similar) with the same concessions as before. Though the R series did include a Firewire port which was not brought to the T series until the ThinkPad T61.

In 2010, the R Series was discontinued in favor of the L, SL, and the E series of Thinkpads.

In 2018, it was brought back as a more premium version of the ThinkPad E Series in China only where it was just the E series with an aluminum lid. ^[5]

Battery configuration

Main	M(x)	Main hot-swappable (max.cells)	Secondary	U	Ultrabay removable
				u	Ultrabay unremovable
	M(x)	Main removable (max.cells)		m(x)	internal (max.cells) "PowerBridge"
	m(x)	Main internal (max.cells)		S	Slice battery

Laptop color codes

Processor   Socketed desktop processor   Socketed mobile processor   Soldered high power processor   Soldered standard power processor   Soldered low power processor   Soldered ultra low power processor Weight 0.9 kg (2.0 lb) Up to 0.91 kg 1.0 kg (2.2 lb) 0.92–1.0 kg 1.1 kg (2.4 lb) 1.01–1.1 kg 1.2 kg (2.6 lb) 1.11–1.2 kg 1.3 kg (2.9 lb) 1.21–1.3 kg 1.4 kg (3.1 lb) 1.31–1.4 kg 1.5 kg (3.3 lb) 1.41–1.5 kg 1.6 kg (3.5 lb) 1.51–1.6 kg 1.7 kg (3.7 lb) 1.61–1.7 kg 1.8 kg (4.0 lb) 1.71–1.81 kg 1.9 kg (4.2 lb) 1.81–1.91 kg 2.0 kg (4.4 lb) 1.91–2.03 kg 2.1 kg (4.6 lb) 2.04–2.14 kg 2.3 kg (5.1 lb) 2.15–2.4 kg 2.5 kg (5.5 lb) 2.41–2.75 kg 2.8 kg (6.2 lb) 2.76–3.05 kg 3.1 kg (6.8 lb) 3.06–3.42 kg 3.5 kg (7.7 lb) 3.43–3.99 kg 4.0 kg (8.8 lb) 4.0–4.99 kg 5.5 kg (12 lb) 5.0–6.49 kg 7.2 kg (16 lb) 6.5–7.99 kg 9.1 kg (20 lb) 8.0–9.99 kg 10.7 kg (24 lb) 10–11.99 kg 12.7 kg (28 lb) 12–14.49 kg 14.5 kg (32 lb) 14.5–17.99 kg 18.1 kg (40 lb) 18–20.99 kg 21.7 kg (48 lb) 21–23.99 kg 24 kg (53 lb) 24–28.99 kg 29.5 kg (65 lb) 29 kg and above Screen resolution   4K or higher   1440p+ (WQHD,QXGA)   1080p+ (Full HD,UXGA)   Better than 768p (SXGA,SXGA+)   600p+ (SVGA,HD,XGA,HD+)   Up to 600p (VGA) Graphics   Dual standard socket graphics option   Dual proprietary socket graphics option   Standard socket graphics option   Proprietary socket graphics option   Soldered performance graphics option   Soldered midrange graphics option   Soldered mainstream graphics option   Soldered entry graphics option   Integrated entry graphics   Integrated basic graphics Laptop storage combinations (excluding WWAN slot) Level PCIe 4.0 x4 PCIe 3.0 x4 PCIe 3.0 x2 M.2 SATA mSATA 1.8" SATA 2.5" SATA 1.8" IDE 2.5" IDE 2019 Not yet (laptops) 2013 2013 2013 2009 2003 2003 1991 1988 3 2 4 3 1 2 2 3 2 3 2 1 4 3 1 2 2 2 1 1 3 2 1 1 2 1 1 2 1 4 1 1 1 3 1 1 1 1 1 1 1 2 3 1 1 2 1 1 Laptop memory Amount LPDDR5X LPDDR5 DDR5 LPDDR4X LPDDR4 DDR4 LPDDR3 DDR4 DDR3L DDR3 DDR2 DDR SDR EDO FPM dual channel < dual channel dual channel < dual channel dual channel < dual channel dual channel < dual channel 2022 (laptops) 2019 (laptops) 2020 2017 2014 2014 2012 2014 2010 2007 2003 1998 1993 1993 1987 max memory = 512 GB N/A N/A 512 GB N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A max memory = 256 GB N/A 256 GB (4 slots) N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A max memory = 128 GB 128 GB 128 GB N/A N/A 128 GB (4 slots) N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 64 GB ≤ max memory < 128 GB 64 GB N/A N/A 64 GB N/A 64 GB (2 slots) 64 GB (4 slots) N/A N/A N/A N/A N/A N/A N/A N/A N/A 32 GB ≤ max memory < 64 GB 32 GB 32 GB 32 GB N/A 32 GB 32 GB (2 slots) 32 GB (4 slots) N/A N/A N/A N/A N/A N/A N/A 16 GB ≤ max memory < 32 GB 16 GB 16 GB 16 GB 16 GB 16 GB (2 slots) 16 GB (4 slots) N/A N/A N/A N/A N/A 8 GB ≤ max memory < 16 GB 8 GB 8 GB 8 GB 8 GB 8 GB (2 slots) 8 GB (4 slots) N/A N/A N/A 4 GB ≤ max memory < 8 GB 4 GB 4 GB 4 GB 4 GB 4 GB 4 GB (4 slots) 4 GB (4 slots) N/A 2 GB ≤ max memory < 4 GB 2 GB (8 chips) 2 GB 2 GB 2 GB 2 GB 2 GB N/A 1 GB ≤ max memory < 2 GB 1 GB (1 chip) dual channel min dual channel min N/A single channel min 1 GB 1 GB 1 GB 1 GB (4 slots) 512 MB ≤ max memory < 1 GB N/A N/A N/A single channel min single channel min N/A dual channel min half channel min 512 MB (8 chips) 512 MB (8 chips) 512 MB 512 MB 256 MB ≤ max memory < 512 MB N/A N/A N/A 256 MB (1 chip) 256 MB (1 chip) N/A single channel min 256 MB (1 chip) N/A single channel min N/A single channel min 256 MB 128 MB ≤ max memory < 256 MB N/A N/A N/A N/A N/A N/A 128 MB (1 chip) N/A N/A half channel min N/A half channel min 64 MB ≤ max memory < 128 MB N/A N/A N/A N/A N/A N/A N/A N/A N/A 64 MB (1 chip) N/A 64 MB (1 chip) max memory < 64 MB N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

T Series Based Models ^[6]

ThinkPad R series (2001–2010)

Case Size	Screen	Type	R3x (2001–2002)			R4x (2003)	R5x (2003–2006)			R6x (2006–2008)		Rx00 (2008–2010)
4:3 screens
14.1"	13.3"	Mainstream	R30	R31	R32	R40	merged with 14" line					Only in 16:10
		Economy				R40e
	14.1"	Mainstream	R30	R31	R32	R40	R50	R51	R52	R60	R61
		Performance					R50p
		In Between								R60i	16:10 only
		Economy				R40e	R50e	R51e		Only 15"
15"		Mainstream				R40	R50	R51	R52	R60	R61
		Performance					R50p
		In Between								R60i	R61i
		Economy					R50e	R51e		R60e
16:10 screens
14.1"		Mainstream									R61	R400
		In Between									R61i	Replaced by Edge/E series
		Education									R61u [7]
15.4"		Mainstream									R61	R500
		In Between									R61i	Replaced by Edge/E series
		Economy									R61e	Replaced by SL series
		Education									R61u [7]

2001-2002 ^[8]

R30

The ThinkPad R30 came in 2 display options: an XGA 13.3" or 14.1". It was, along with the A30, the first ThinkPad to use the design features of a bevel on the left back corner of the laptop and exposed metal hinges, a feature that would be present on most subsequent ThinkPads released.

R31

IBM ThinkPad R32

The ThinkPad R31 came in 2 display options: an XGA 13.3" or 14.1" and is a minor internal hardware revision bringing socketed processors, a new chipset which meant a new CPU generation, and the IBM Embedded Security Subsystem to the R series.

R32

The ThinkPad R32 came in 2 display options: an XGA 13.3" or 14.1", but despite being named as a minor revision to the R3x generation, like most other IBM ThinkPads with their generations, the last model in this generation saw major revisions to the internals and some minor changes to the exterior. These revisions include: using Mobile Pentium 4-M CPUs instead of Mobile Pentium 3-M, Using DDR-266 RAM instead of PC-133 SDR RAM, and a reworked motherboard with rearranged components along with the addition of battery terminals for an UltraBay battery.

Model	Release (US)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R30 [9]	Oct 2001	313mm x 254mm x 36mm (12.3" x 10" x 1.4")	2.68 kg (5.9 lb)	Intel Mobile Celeron or Mobile Pentium 3 (Coppermine) FSB: 100MT/s	ALi CyberBLADE ALADDiN i1	1GB (2x PC133 SDR SO-DIMM) [10]	Trident CyberBLADE ALADDiN i1 (8MB shared)	One Ultrabay Plus, [a] One 2.5" IDE	Intel 82550GY 10/100 Ethernet Optional IBM High Rate Wireless LAN with Modem in Mini-PCI slot Optional Agere LU97 Scorpio AC'97 modem card in CDC slot (exclusive)	CCFL backlit 1024x768(XGA) TN TFT LCD for both 13.3" and 14.1"	M(8) [b] [c]	One White ThinkLight Supports ThinkPad Port Replicator ThinkPad Port Replicator II ThinkPad Mini-Dock
R31 [11]	Feb 2002	313mm x 254mm x 36mm (12.3" x 10" x 1.4")	2.77 kg (6.1 lb)	Intel Mobile Celeron or Mobile Pentium 3-M (Tutalin) FSB: 133MT/s	Intel 830MG	1GB (2x PC133 SDR SO-DIMM) [10]	Intel Extreme Graphics (32MB shared)	One Ultrabay Plus, [a] One 2.5" IDE	Intel 82562ET 10/100 Ethernet Optional IBM High Rate Wireless LAN with Modem in Mini-PCI slot Optional Agere LU97 Scorpio AC'97 modem card in CDC slot (exclusive)	CCFL backlit 1024x768(XGA) TN TFT LCD for both 13.3" and 14.1"	M(8) [b] [c]	One White ThinkLight Supports ThinkPad Port Replicator ThinkPad Port Replicator II ThinkPad Mini-Dock
R32 [12]	Jun 2002	313mm x 254mm x 38mm (12.3" x 10" x 1.5")	2.81 kg (6.2 lb)	Intel Mobile Celeron or Pentium 4-M (Northwood) FSB: 400MT/s	Intel 845MP	1GB (2x DDR-266 SO-DIMM)	ATI Mobility Radeon 7000 [d] (8/16MB) [13]	One Ultrabay Plus, [a] One 2.5" IDE	Intel 82562ET 10/100 Ethernet Optional IBM High Rate Wireless LAN with Modem I or II or Cisco Aironet Wireless 802.11b in Mini-PCI slot Optional Agere LU97 Scorpio AC'97 modem card in CDC slot (exclusive)	CCFL backlit 1024x768(XGA) TN TFT LCD for both 13.3" and 14.1"	M(6) U	One White ThinkLight Supports ThinkPad Port Replicator ThinkPad Port Replicator II ThinkPad Mini-Dock

2003 ^{[7] [8]}

R40

IBM ThinkPad R40 15"

The ThinkPad R40 came in 4 display options and 2 different body types: an XGA 13.3" or 14.1" in the 14" body type and either an XGA or an SXGA+ 15.0" in the 15" body type and was a sort of facelift to the previous R32, keeping the core design the same the (It looks more similar to the R32 than the R32 to the R31 from the bottom). This was the first R series ThinkPad to have the options for an UltraNav trackpad, a 15" display with a higher resolution 1400x1050 SXGA+ display panel, and Bluetooth. This was the first R series ThinkPad to have USB 2.0 and a hot-swappable UltraBay ^[14] included.

R40e

The ThinkPad R40e came in 2 display options: an XGA 13.3" or 14.1" and was the budget version of the R40. With the budget status came the removal of the UltraBay (having a screwed in place optical drive), docking connector, the S-Video out port, 4 pin FireWire 400 port, and IrDA 1.1 port, and the second speaker. It was also unable to be optioned with Bluetooth, a 15" screen, Pentium M processors, or trackpad.

Model	Release (US)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R40(14") [15]	Jan 2003	313mm x 254mm x 38mm (12.3" x 10" x 1.5")	2.81 kg (6.2 lb)	Intel or Mobile Celeron or Mobile Pentium 4-M (Northwood) or Pentium M (Banias) FSB: 400MT/s	Intel 855PM [e] or 845MP	2GB (2x DDR-266 SO-DIMM)	ATI Mobility Radeon 7000 [d] (16MB) or 7500 [f] (32MB)	One UltraBay Plus, One 2.5" IDE	Intel 82562EZ 10/100 Ethernet Agere LU97 Scorpio AC'97 modem card in CDC slot Optional 802.11b Wireless LAN Optional Bluetooth 1.1	CCFL backlit 1024x768(XGA) TN TFT LCD for both 13" and 14"	M(6) U	One White ThinkLight Option for Trackpad Supports ThinkPad Port Replicator II ThinkPad Mini-Dock
R40(15") [15]		330mm x 268mm x 41mm (13" x 10.6" x 1.6")	3.04 kg (6.7 lb)							CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD
R40e [16]	Mar 2003 [7]	313mm x 254mm x 39mm (12.3" x 10" x 1.5")	2.72 kg (6.0 lb)	Intel Mobile Celeron or Mobile Pentium 4-M (Northwood) FSB: 400MT/s	ATI RS200M	1GB (2x DDR-266 SO-DIMM)	ATI 330M IGP	One 2.5" IDE	Broadcom BCM5901 10/100 Ethernet Agere LU97 Scorpio AC'97 modem card in CDC slot Optional 802.11b Wireless LAN	CCFL backlit 1024x768(XGA) TN TFT LCD for both 13" and 14"	M(6) [c]	One White ThinkLight

2003-2006 ^{[7] [8]}

R50

With a new number in the middle also came with a new design. This time instead of coming up with a brand new design for the R series, the T series design for the T40 had its magnesium midframe removed, became thicker to maintain stiffness, and a few styling details were changed to create the new design of the R50. The R50 came in 3 display options: an XGA TN 14.1" or either a XGA TN or an SXGA+ IPS 15".

R50p

The R50p came in 2 display options: either a UXGA IPS or a QXGA IPS 15".

R50e

The R50e came in 2 display options: XGA TN 14.1" or 15".

R51

The R51 came in 3 display options: an XGA TN 14.1" or either a XGA TN or an SXGA+ IPS 15".

R51e

The R51e came in 2 display options: XGA TN 14.1" or 15". This was the first R series model released by Lenovo in September 2005.

R52 ^[g]

The R52 came in 3 display options: an XGA TN 14.1" or either a XGA TN or an SXGA+ TN 15" and was the first model to use DDR2 memory. From this model on, the R series was unable to be optioned with an IPS panel.

Model	Release (US)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R50(14") [17] [18]	Oct 2003	314mm x 260mm x 37mm (12.4" x 10.2" x 1.46")	2.6 kg (5.7 lb)	Intel Pentium M (Banias) FSB: 400MT/s	Intel 855PM	2GB (2x DDR-333 SO-DIMM)	ATI Mobility Radeon 7500 or 9000 32MB (both)	One UltraBay Enhanced, One 2.5" IDE	Intel 82540EP Gigabit or 82562EZ 10/100 Ethernet Agere LU97 Scorpio AC'97 with optional Bluetooth 1.1 modem card in CDC slot Optional 802.11b or g Wireless LAN in Mini PCI slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) U	One Amber ThinkLight Option for Trackpad Supports ThinkPad Port Replicator II ThinkPad Mini-Dock Thinkpad Dock II
R50(15") [17] [18]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.0 kg (6.6 lb)							CCFL backlit 1024x768(XGA) TN or 1400x1050(SXGA+) IPS TFT LCD
R50p [17] [19]	Nov 2003	332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.2 kg (7.1 lb)	Intel Pentium M (Banias) FSB: 400MT/s	Intel 855PM	2GB (2x DDR-333 SO-DIMM)	ATI Mobility Radeon FireGL T2 128MB	One UltraBay Enhanced, One 2.5" IDE	Intel 82540EP Gigabit Ethernet Agere LU97 Scorpio modem with Bluetooth 1.1 in CDC slot 802.11b or g Wireless LAN In Mini-PCI slot	CCFL backlit 1600x1200(UXGA) or 2048x1536(QXGA) IPS TFT LCD	M(9) U	One Amber ThinkLight Trackpad as standard Supports ThinkPad Port Replicator II ThinkPad Mini-Dock Thinkpad Dock II
R50e (14") [20] [21]	Apr 2004	314mm x 260mm x 37mm (12.4" x 10.2" x 1.46")	2.7 kg (6.0 lb)	Intel Celeron M (Banias) or Pentium M (Dothan) [h] FSB: 400MT/s	Intel 855GM	2GB (2x DDR-266 SO-DIMM)	Intel Extreme Graphics 2 (64MB Shared)	One 2.5" IDE	Intel 82562EZ 10/100 ethernet Conexant SmartV.92 56K Modem in CDC Slot 802.11b or g Wireless LAN In Mini-PCI slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) [c]	One Amber ThinkLight
R50e (15") [20] [21]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.0 kg (6.6 lb)							CCFL backlit 1024x768(XGA) TN TFT LCD
R51 (14") [17] [22]	Apr 2004	314mm x 260mm x 37mm (12.4" x 10.2" x 1.46")	2.7 kg (6.0 lb)	Intel Celeron or Pentium M (Banias) or Pentium M (Dothan) [h] FSB: 400MT/s	Intel 855GME	2GB (2x DDR-333 SO-DIMM)	Intel Extreme Graphics 2 [i] (64MB Shared) ATI Mobility Radeon 7500 or 9000 32MB (both)	One UltraBay Enhanced, One 2.5" IDE	Intel 82540EP Gigabit or 82562EZ 10/100 Ethernet Conexant SmartV.92 modem card with optional Bluetooth 1.1 in CDC slot Optional 802.11b or g Wireless LAN in Mini PCI slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) U	One Amber ThinkLight Option for Trackpad Supports ThinkPad Port Replicator II ThinkPad Mini-Dock Thinkpad Dock II
R51 (15") [17] [22]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.0 kg (6.6 lb)							CCFL backlit 1024x768(XGA) TN or 1400x1050(SXGA+) IPS TFT LCD
R51e (14") [20] [23]	Sep 2005	314mm x 260mm x 37mm (12.4" x 10.2" x 1.46")	2.8 kg (6.2 lb)	Intel Celeron M or Pentium M (Dothan) FSB: 533MT/s	ATI RC410MD	2GB (2x DDR2-533 SO-DIMM)	ATI Radeon Xpress 200M (64MB [7] [j] shared)	One 2.5" IDE	Broadcom BCM5751F 10/100 Ethernet Conexant SmartV.92 modem card in CDC slot Optional 802.11b or g Wireless LAN In Mini-PCI slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) [c]	One Amber ThinkLight
R51e (15") [20] [23]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.0 kg (6.6 lb)							CCFL backlit 1024x768(XGA) TN TFT LCD
R52 (14") [20] [24]	Mar 2005	314mm x 260mm x 37mm (12.4" x 10.2" x 1.46")	2.8 kg (6.2 lb)	Intel Celeron M or Pentium M (Dothan) FSB: 533MT/s	Intel 915PM or 910GML [i] or 915GM [i]	2GB (2x DDR2-533 SO-DIMM)	ATI Mobility Radeon X300 (32 or 64MB) Intel Graphics Media Accelerator 900 [i] (128MB [7] shared)	One UltraBay Enhanced, One 2.5" IDE	Broadcom BCM5751M Gigabit Ethernet Conexant SmartV.92 modem card with optional Bluetooth 1.2 in CDC slot Optional 802.11b or g Wireless LAN In Mini-PCI slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) U	One Amber ThinkLight Option for Trackpad Supports ThinkPad Port Replicator II ThinkPad Mini-Dock Thinkpad Dock II
R52(15") [20] [24]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	3.0 kg (6.6 lb)							CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD

2006-2008 ^[7]

R60

The R60 came in 4 display options: either a XGA or an SXGA+ TN panel for both 14.1 and 15". A new number in the middle meant a redesign with this design being based on the T60 released two months prior. This was the first R series model to use a SATA hard drive rather than IDE and while the previous R52 technically had SATA run to the hard drive, it was adapted to IDE in order to maintain compatibility with previous models and to cut cost on the hard drive.

R60i

The R60i came in 4 display options: either a XGA or an SXGA+ TN panel for both 14.1 and 15" and was only offered in the Chinese market.

R60e

The R60e came in 1 display option: a XGA TN 15".

R61 ^[25]

The ThinkPad's transition from 4:3 to the wider aspect ratio of 16:10, started in 2005 right after Lenovo had acquired the Thinkpad brand with the Z Series, had now began affecting the R series. Although the R60 series was unaffected, starting with the R61, the R series, too would transition to 16:10. So the R61 came in 6 (maybe 8) ^[k] display options: an XGA or SXGA+ 15" 4:3, a WXGA 14.1" or 15.4" 16:10, a WXGA+ 14.1" 16:10, or a WSXGA+ 15.4" 16:10. If Lenovo's source is to be believed, either an XGA or SXGA+ 14" 4:3 were also available

R61i ^{[26] [27]}

The R61i came in 7 display options: an XGA or SXGA+ TN 15", a WXGA TN in either 14.1" or 15.4" with both also able to be glossy, or a WXGA+ TN 14.1". It was a budget configuration of the R61, being practically the same laptop, just without some high end options such as a discrete GPU or WWAN.

R61e

The R61e came in 1 display option: an WXGA TN 15.4".

R61u

The R61u came in 4 display options: a WXGA TN 14.1" or 15.4", a WXGA+ TN 14.1", or a WSXGA+ TN 15.4". Contrary to its name, it is not a slimmer version of the R61 but instead was just the same computer but only available for schools.

Model	Release (US)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R60 (14") [28] [26]	May 2006	314mm x 260mm x 37.2mm (12.4" x 10.2" x 1.46")	2.8 kg (6.2 lb)	Intel Celeron M or Core Solo or Duo (Yonah) or Core 2 Duo (Merom) FSB: 667MT/s	Intel 945GM	3GB [l] (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator 950 or ATI Mobility Radeon X1300 (64MB) or X1400 (128MB) Up to 512MB shared	One Ultrabay Enhanced, One 2.5" SATA I	Intel 82573 or Broadcom BCM5751M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot Optional Wireless WAN in Mini-PCIe Slot Optional Bluetooth 2.0 On Display Cable	CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD	M(9) U	One Amber ThinkLight Option for Trackpad Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R60 (15") [28] [26]		332mm x 269mm x 40.2mm (13.1" x 10.6" x 1.58")	3.1 kg (6.8 lb)							CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD
R60i (14") [29] [26]	Never in US (Nov 2006 in China)	314mm x 260mm x 37.2mm (12.4" x 10.2" x 1.46")	2.8 kg (6.2 lb)	Intel Pentium Dual Core or Core Duo (Yonah) or Core 2 Duo (Merom) FSB: 667MT/s	Intel 945GM	3GB [l] (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator 950 or ATI Mobility Radeon X1300 (64MB) or X1400 (128MB) Up to 512MB shared	One Ultrabay Enhanced, One 2.5" SATA I	Broadcom BCM5751M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot Optional Wireless WAN in Mini-PCIe Slot Optional Bluetooth 2.0 On Display Cable	CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD	M(9) U	One Amber ThinkLight Option for Trackpad Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R60i (15") [29] [26]		332mm x 269mm x 40.2mm (13.1" x 10.6" x 1.58")	3.2 kg (7.1 lb)							CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD
R60e [30] [26]	May 2006	332mm x 269mm x 40.2mm (13.1" x 10.6" x 1.58")	2.8 kg (6.2 lb)	Intel Celeron M or Core Solo or Duo (Yonah) or Core 2 Duo (Merom) FSB: 667MT/s	Intel 940GML or 945GM	940GML: 2GB (2x DDR2-533 SO-DIMM) 945GM: 3GB [l] (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator 950 Speed: 940GML:166MHZ 945GM:250MHZ	One 2.5" SATA I	Broadcom BCM5751M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot	CCFL backlit 1024x768(XGA) TN TFT LCD	M(9) [c]	One Amber ThinkLight
R61 (14" Wide) [31] [32]	May 2007	335.5mm x 237mm x 34.9mm (13.2" x 9.3" 1.37")	2.4 kg (5.3 lb)	Intel Celeron (Merom) or Core 2 Duo (Merom/Penryn) FSB: 800MT/s	Intel GM965 or PM965	8GB (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator X3100 or nVidia Quadro NVS 140M (128MB)	One Ultrabay Enhanced, One 2.5" SATA I [m]	Intel 82566M or Broadcom BCM5787M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot Optional Wireless WAN in Mini-PCIe Slot Optional Bluetooth 2.0 On Display Cable	CCFL backlit 1280x800(WXGA) or 1440x900(WXGA+) TN TFT LCD	M(9) [n] U	One Amber ThinkLight Trackpad Standard Option for 1.3MP Camera Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R61 (15") [31] [26]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	2.8 kg (6.2 lb)							CCFL backlit 1024x768(XGA) or 1400x1050(SXGA+) TN TFT LCD
R61 (15" Wide) [31] [33]		358.5mm x 260mm 38.5mm (14.1" x 10.2" x 1.4")	2.9 kg (6.4 lb)							CCFL backlit 1280x800(WXGA) or 1680x1050(WSXGA+) TN TFT LCD
R61i (14" Wide) [32] [34]	Jul 2007	335.5mm x 237mm x 34.9mm (13.2" x 9.3" 1.37")	2.4 kg (5.3 lb)	Intel Pentium Dual Core (Merom) or Core 2 Duo (Merom/Penryn) FSB: 800MT/s	Intel GM965	8GB (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator X3100	One Ultrabay Enhanced, One 2.5" SATA I [m]	Intel 82566M or Broadcom BCM5787M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot Optional Bluetooth 2.0 On Display Cable	CCFL backlit 1280x800(WXGA) (Optional Glossy) or 1440x900(WXGA+) TN TFT LCD	M(9) [n] U	One Amber ThinkLight Option for Trackpad Option for 1.3MP Camera Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R61i (15") [26] [34]		332mm x 269mm x 40mm (13.1" x 10.6" x 1.58")	2.8 kg (6.2 lb)							CCFL backlit 1024x768(WXGA) or 1400x1050(SXGA+) TN TFT LCD
R61i (15" Wide) [33] [34]		358.5mm x 260mm 38.5mm (14.1" x 10.2" x 1.4")	2.9 kg (6.4 lb)							CCFL backlit 1280x800(WXGA) (Optional Glossy) TN TFT LCD
R61e [26] [35]	Jul 2007	358.5mm x 260mm 38.5mm (14.1" x 10.2" x 1.4")	2.9 kg (6.4 lb)	Intel Celeron or Core 2 Duo (Merom) FSB: 800MT/s	Intel GM965	8GB (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator X3100	One 2.5" SATA I [m]	Broadcom BCM5787M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot	CCFL backlit 1280x800(WXGA) TN TFT LCD	M(9) [c]	One Amber ThinkLight
R61u (14" wide) [32]	Feb 2008	335mm x 261mm x 34.9mm (13.2" x 10.2" 1.37")	2.5 kg (5.5 lb)	Intel Core 2 Duo (Penryn) FSB: 800MT/s	Intel GM965 or PM965	8GB (2x DDR2-667 SO-DIMM)	Intel Graphics Media Accelerator X3100 or nVidia Quadro NVS 140M (128MB)	One Ultrabay Enhanced, One 2.5" SATA I [m]	Intel 82566M or Broadcom BCM5787M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot Optional 802.11g or n Wireless LAN in Mini-PCIe Slot Optional Bluetooth 2.0 On Display Cable	CCFL backlit 1280x800(WXGA) or 1440x900(WXGA+) TN TFT LCD	M(9) [n] U	One Amber ThinkLight Trackpad Standard Option for 1.3MP Camera Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R61u (15" wide) [26]	Jan 2008	358.5mm x 260mm 38.5mm (14.1" x 10.2" x 1.4")	2.9 kg (6.4 lb)							CCFL backlit 1280x800(WXGA) or 1680x1050(WSXGA+) TN TFT LCD

2008-2010 ^[7]

R400

The R400 came in 2 display options: either a WXGA or a WXGA+ TN 14.1". This shared the same core design with the 14" widescreen R61 with only a beveled edge on the bottom right edge and shifted around ports.

R500

The R500 came in 2 display options: either a WXGA or a WSXGA+ TN 15.4". This shared the same core design with the 15" widescreen R61 with only a beveled edge on the bottom right edge and shifted around ports.

Model	Release (US)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R400 [36] [37]	Aug 2008	335.5 x 238mm x 35mm (13.2" x 9.4" x 1.4")	2.3 kg (5.1 lb)	Intel Celeron (Merom L) or Core 2 Duo (Merom or Penryn) FSB: 1066MT/s	Intel GM45	8GB (2x DDR3-1066 SO-DIMM)	Intel Graphics Media Accelerator X4500 or ATI Mobility Radeon HD3570 (128MB or 256MB)	One Seral Ultrabay Enhanced, One 2.5" SATA II	Broadcom BCM5787M Gigabit Ethernet Conexant CSM92-SP modem card in CDC Slot 802.11n Wireless LAN in Mini-PCIe Slot Optional Wireless WAN in MiniPCIe Slot Optional Wireless USB in Mini-PCIe slot Optional Bluetooth 2.1 On Display Cable	CCFL backlit 1280x800(WXGA) or 1440x900(WXGA+) TN TFT LCD	M(9) [n] U	One Amber ThinkLight UltraNav Trackpad Option for 1.3MP Camera Supports ThinkPad Essential Port Replicator ThinkPad Advanced Mini-Dock ThinkPad Advanced Dock
R500 [38] [39]		358.6mm x 260mm x 39mm (14.1" x 10.2" x 1.5")	2.93 kg (6.5 lb)							CCFL backlit 1280x800(WXGA) or 1680x1050(WSXGA+) TN TFT LCD

2010-2017

The R series was then discontinued and had an 7-year hiatus until 2017 when it was brought back only in China as a more premium E480. ^[1]

E series Based Models

ThinkPad R series (2017–Present ^[2] )

Screen	Type	Rx80 (2017)	Rx90 (2018)	2019	2020	2021	2022	2023	2024
14"	Mainstream	R480	R490	R14 Gen 1	R14 Gen 2	R14 Gen 3	R14 Gen 4	R14 Gen 5	R14 Gen 6
15"	Mainstream	R580	R590	R15 Gen 1	R15 Gen 2

2017

R480

The ThinkPad R480 came out in 2017 as a China exclusive, higher end version of the ThinkPad E480. It and every subsequent model is the same as the E Series equivalent except for an aluminium lid.

R580

The ThinkPad R580 came out in 2017 and is has the same differences from the E series as the R480 but instead of being based on the E480, it was based on the E580.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R480 [40] [41] [42]	Nov 2017	329mm x 242mm x 19.9mm (12.9" x 9.5" x 0.78")	1.75 kg (3.9 lb)	7th (Kaby Lake) or 8th gen (Kaby Lake R) U series Intel Core i3, i5, or i7	Kaby Lake Intel SoC Chipset	32GB (2x DDR4-2400 SO-DIMM)	Intel HD graphics 620 or UHD Graphics 620 with Optional additional AMD Radeon 540 (2GB GDDR5)	One 2.5" SATA III, One M.2 x2	Realtek RTL8111GUS Gigabit Ethernet 802.11ac Wireless LAN+Bluetooth 4.1 combo card in M.2 slot	LED Backlit 1366x768(HD) TN or 1920x1080(FHD) IPS TFT LCD	m(3) 45Wh	720p Camera 1.8mm Travel Keyboard
R580 [o] [43]		369mm x 252mm x 19.95mm (14.53" x 9.92" x 0.78")	2.1 kg (4.6 lb)							LED Backlit 1366x768(HD) TN or 1920x1080(FHD) IPS

2018

R490

Just like the previous R480, the R490 was based on the E series of its time—for this case, the E490—changing almost nothing except having an aluminum lid and being a name upgrade just like the previous year. This was only offered in China and uses Whiskey Lake Intel U series processors.

R590

The R590 is the 15 inch verion of the R490 and was based on the E590 instead. Except the R590 had real physical difference as all E590s came with aluminum lids. ^[44]

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R490 [45] [46] [47]	Dec 2018	329.3 mm x 242.8 mm x 19.9 mm (12.96" x 9.56" x 0.78")	1.75 kg (3.9 lb)	Intel 8th gen (Whiskey Lake) U series Core i3, i5, or i7	Intel SoC Platform Chipset	64GB (2x DDR4-2400 SO-DIMM)	Intel UHD Graphics 620 with Optional additional AMD Radeon 540X (2GB GDDR5)	One 2.5" SATA III, One M.2 x2	Realtek RTL8111GUS Gigabit Ethernet 802.11ac Wireless LAN+Bluetooth 4.1 or 5.1 combo card in M.2 slot	LED Backlit 1366x768(HD) TN or 1920x1080(FHD) IPS TFT LCD	m(3) 45Wh	720p Camera 1.8mm Travel Keyboard
R590 [48] [44]		369mm x 252.5mm x 19.9mm (14.53" x 9.94" x 0.78")	2.12 kg (4.7 lb)							LED Backlit 1366x768(HD) TN or 1920x1080(FHD) IPS

2019

R14 Gen 1

Along with other offerings from Lenovo starting in 2019, the R series changed to the new naming scheme of model letter, followed by screen size, with generation numbers to denote new models. So for the R14 Gen 1, it is the first generation 14 inch R Series ThinkPad. Just like the previous models of the new series, it is just a higher configuration model of the E series. However, in this case, is completely nonsensical as configurations of the E14 with both an aluminum lid and body exist while the R14 only has an aluminium lid and a plastic body.

R15 Gen 1

This is the first generation of 15 inch R series ThinkPad based on the E15 gen 1.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 1 [49] [50] [51]	Oct 2019	325 x 232 x 18.9 mm (12.8" x 9.13" x 0.74")	1.69 kg (3.7 lb)	Intel 10th gen (Comet Lake) U series Core i3, i5, or i7	Intel SoC Platform Chipset	32GB [p] (1x DDR4-2666 SO-DIMM)	Intel UHD Graphics 620 with Optional Additional AMD Radeon 625 (2GB GDDR5)	One 2.5" SATA III, One M.2 x4	Realtek RTL8111GUS Gigabit Ethernet 802.11ac or ax Wireless LAN+Bluetooth 5.0 or 5.1 combo card in M.2 slot	LED Backlit 1920x1080(FHD) TN or IPS	m(3) 45Wh	720p camera with optional ThinkShutter 1.8mm Travel Keyboard
R15 Gen 1 [52]		368 x 245 x 18.9 mm (14.49" x 9.65" x 0.74")	1.9 kg (4.2 lb)							LED Backlit 1920x1080(FHD) TN or IPS

2020

R14 Gen 2

Changes were minor with the second generation of ThinkPad R14. It shares essentially the same design as the first generation but updates the internals to 11th gen Intel and to include a second m.2 PCIe slot in exchange for the 2.5" SATA along with Thunderbolt 4 in place of the USB-C 3.0 and USB-A 3.0 port. This is based on the ThinkPad E14 Gen 2. This has both the aluminum lid and base.

R15 Gen 2

This is the second and last generation of ThinkPad R15 based on the ThinkPad E15 Gen 2.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 2 [53] [54] [55]	November 2020	324 x 220 x 17.9 mm (12.76" x 8.66" x 0.7")	1.64 kg (3.6 lb)	Intel 11th gen (Tiger Lake) G4/G7 series Core i3, i5, or i7	Intel SoC Platform Chipset	32GB [p] (1x DDR4-3200 SO-DIMM)	Intel UHD Graphics Xe or Iris Xe with Optional Additional NVIDIA Geforce MX350 or MX450 (2GB GDDR5)	Two M.2 x4	Realtek RTL8111GUS Gigabit Ethernet 802.11ac or ax Wireless LAN+Bluetooth 5.0 or 5.1 soldered	LED Backlit 1920x1080(FHD) TN or IPS Optional touch	m(3) 45Wh	720p camera with optional ThinkShutter One TB4 1.8mm Travel Keyboard
R15 Gen 2 [53] [56]		368 x 245 x 18.9 mm (14.49" x 9.65" x 0.74")	1.7 kg (3.7 lb)							LED Backlit 1920x1080(FHD) TN or IPS Optional touch

2021

R14 Gen 3

This is the 3rd generation of ThinkPad R14 based on the ThinkPad E14 Gen 3 using 5000 series Ryzen CPUs. There is no 15 inch model for this generation and there is no other model other than the 14 inch for all subsequent R series ThinkPads.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 3 [q] [57] [58]	April 2021	324 x 220.7 x 17.9 mm (12.76" x 8.69" x 0.7")	1.69 kg (3.7 lb)	AMD Ryzen 5000 Series (Zen 3) U series Ryzen 3, 5, 5 Pro, 7	AMD SoC Platform Chipset	36/40GB (1x DDR4-3200 SODIMM + 4/8GB Soldered)	AMD Radeon Graphics Ryzen 3: Vega 6 Ryzen 5: Vega 7 Ryzen 7: Vega 8	Two M.2 x4	Realtek RTL8111GUS Gigabit Ethernet 802.11ac or ax Wireless LAN+Bluetooth 5.1 soldered	LED Backlit 1920x1080(FHD) TN or IPS	m(3) 45Wh 57Wh	720p camera with optional ThinkShutter 1.8mm Travel Keyboard

2022

R14 Gen 4

This is the fourth generation of ThinkPad R14 based on the ThinkPad E14 Gen 4. This is the last R series ThinkPad to have a keyboard with 1.8mm of key travel.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 4 [59] [60] [61]	April 2022	324 x 220 x 17.9 mm (12.76" x 8.66" x 0.7")	1.64 kg (3.6 lb)	Intel 12th gen (Alder Lake) U/P series Core i3, i5, or i7	Intel SoC Platform Chipset	40GB (1x DDR4-3200 SODIMM + 8GB Soldered)	Intel UHD Graphics or Iris Xe with Optional Additional NVIDIA Geforce M550 (2GB GDDR6)	One M.2 3.0x4, One M.2 4.0x4	Intel® Ethernet Connection I219-V Gigabit Ethernet Wi-Fi 6 or 6E 802.11ax Wireless LAN+Bluetooth 5.1 soldered	LED Backlit 1920x1080(FHD) TN or IPS Optional touch	m(3) 45Wh 57Wh	720p camera with optional ThinkShutter One TB4 1.8mm Travel Keyboard

2023

R14 Gen 5

This is the fifth generation of ThinkPad R14 based on the ThinkPad E14 Gen 5. This is the first generation to only have IPS displays offered, and the first generation to finally have a display option with more pixels per inch than the 2048x1536 15" panel offered on the R50p, at 188.68 PPI compared to 170.67. Although it does have a lower PPI, there are still more pixels on the QXGA panel of the R50p. It only loses on PPI due to it being a larger display.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 5 [62] [63] [64]	April 2023	313 x 219.3 x 17.99 mm (12.32" x 8.63" x 0.71")	1.43 kg (3.2 lb)	Intel 13th gen (Raptor Lake) U/P/H series Core i3, i5, or i7	Intel SoC Platform Chipset	40/48GB (1x DDR4-3200 SODIMM + 8/16GB Soldered)	Intel UHD Graphics or Iris Xe with Optional Additional NVIDIA Geforce M550 (2GB GDDR6)	One M.2 3.0x4, One M.2 4.0x4	Intel® Ethernet Connection I219-V Gigabit Ethernet Wi-Fi 6 or 6E 802.11ax Wireless LAN+Bluetooth 5.2 or 5.3 soldered	LED Backlit 1920x1200(WUXGA) Optional touch or 2240x1400(WQHD) IPS	m(3) 47Wh 57Wh	720p or 1080p camera with optional IR Camera One TB4 1.5mm Travel Keyboard

2024

R14 Gen 6

This is the sixth generation of ThinkPad R14 based on the ThinkPad E14 gen 6. This is the first generation of R series ThinkPad to have 2 SODIMM slots since the Rx90 generation released in 2018.

Model	Release (China)	Dimensions (w, d, h)	Weight (min)	CPU	Chipset	Memory (max)	Graphics	Storage	Networking	Screen	Battery	Other
R14 Gen 6 [65] [66] [67]	March 2024	313 x 219.3 x 17.99 mm (12.32" x 8.63" x 0.71")	1.44 kg (3.2 lb)	Intel 1st gen (Meteor Lake) U/H series Core Ultra 5, or 7	Intel SoC Platform Chipset	96GB (2x DDR5-5600 SODIMM)	Intel Graphics or Intel Arc Graphics [r]	One M.2 3.0x4, One M.2 4.0x4	Intel® Ethernet Connection I219-V or I219-LM (only on vPro models) Gigabit Ethernet Wi-Fi 6 or 6E 802.11ax Wireless LAN+Bluetooth 5.2 or 5.3 soldered	LED Backlit 1920x1200(WUXGA) Optional touch or 2240x1400(WQHD) IPS	m(3) 47Wh 57Wh	720p or 1080p camera with optional IR Camera One TB4 1.5mm Travel Keyboard

Notes

1. Ultrabay does not support hot or warmswapping
2. 8 cell option is an 8 cell NiMH battery
3. Ultrabay does not have battery terminals
4. In IBM Hardware Maintenance Manuals, the ATI Mobility Radeon 7000 is called the M6
5. Only R40s optioned with a Pentium M processor had the 855PM Chipset
6. In IBM Hardware Maintenance Manuals, the ATI Mobility Radeon 7500 is called the M7
7. There is no such thing as an "R52e" one look at the IBM or Lenovo Product Specifications Reference book can show that
8. The Dothan Pentium M option was released later in July 2004
9. This needs a separate BIOS from the rest of the models
10. When system memory is less than 511MB, the GPU will only use up to 32MB of system memory
11. Although on Lenovo's website it says that there was 2 different options for 14.1" 4:3, on the same page, it never lists the dimensions of that 14.1" 4:3
12. Due to chipset limitations, the system will take 4GB but will only ever use 3GB, even with a 64-bit processor
13. SATA II speeds unlockable using modded BIOS
14. The 14" wide models use a different battery from all the other models
15. I can't find any details about the R580. I know it exists. There are parts listings for the R580 and Lenovo driver documentation listing the R580 but there is no specifics on the actual machine. But seeing how the R480 and the E480 both weigh the same and have the same MT's, I will be guessing that Lenovo did the same with the R580 and so information given on the R580 will be from the E580. This will be the same for all following models that I know exist...just I can't find anything about.
16. Apparently 64 DDR4 SO-DIMMs exist or at least they should exist but I have found none that are non-ECC
17. Like I said in the footnotes on the R580, I will just be using the E series info on this.
18. Only systems with H series processors and 16GB RAM or more can have Arc Graphics. Otherwise, it's just regular Intel.

References

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