IBM ThinkPad T20 series

Last updated
IBM ThinkPad T20 series
IBM ThinkPad logo askew.svg
ThinkPad T20.jpg
IBM ThinkPad T20, the first of the series
Manufacturer IBM
IntroducedMay 2000
DiscontinuedJuly 2003
Processor Intel Pentium III
Frequency650 MHz – 1.20 GHz
Memory64–256 MB SDRAM (PC100 on T20/T21/T22, PC133 on T23)
Ports Serial, Parallel, VGA out, USB, PS/2 Port, Ethernet, RJ11 (Modem), IBM docking port, CardBus, S-Video Out, Line-In/Line-Out/Microphone

The IBM ThinkPad T20 series was a series of notebook computers introduced in May 2000 by IBM as the successor of the 770 series and the first model of the T-series which exists today under Lenovo ownership. Four models were produced, the T20, T21, T22, and T23; [1] the series was succeeded in May 2002 by the ThinkPad T30, but was produced until July 2003.

Contents

Features

The T20 series succeeded the 600 series, adding new features such as S-Video output, an Ethernet port, and the UltraBay 2000 hot-swappable bay. The graphics card was upgraded from the 4MB NeoMagic 256ZX which was used in the 600X, to an 8MB S3 Savage (16MB on T23 models) which was capable of rendering 3D graphics in hardware. The ThinkPad T23 was also the first ThinkPad laptop model to offer an optional WiFi connection via a mini-PCI card, using wireless antennas which were built into the lid on select upper-end models. The T20 series originally shipped with either Windows 98, Windows 2000, or Linux, with later T23 models shipping with Windows XP. All T20 models were capable of running Windows 3.x, Windows 95, Windows NT 4.0, OS/2 Warp 4, or Windows Me as well as various Linux distributions. Additionally, the T23 was capable of running Windows Vista or Windows 7, if equipped with at least 512MB of memory. One common problem of the earlier T20 series was a hardware defect which caused the machine to suddenly stop working and begin blinking the hard drive and power indicators. The machine would not power on. This became known as the "Blink of Death". In addition, on some T23 models, the rear memory slot could fail, rendering the machine only able to use up to 512 MB of memory, rather than 1 GB. Another common issue with the T23 was that one of the coils, near the CPU, could break off the motherboard due to cold solder joints. This caused multiple issues, including the inability to boot or hard lockup/freeze.

Models

Comparison

For all model versions/specifications: https://psref.lenovo.com/syspool/Sys/PDF/withdrawnbook/tawbook.pdf
ModelIntro-
duction
Date
With-
drawal
Date
Base
Price
Screen Options
TFT
CPU
Options
Memory
(std - max)
Video
Controller
Audio
Controller
Hard Drive
Options
Misc
Info
T20May 2000??13.3" XGA 1024×768
14.1" XGA 1024×768
Pentium III - 650, 700, or 750 MHz
SpeedStep
100 MHz Bus
256 KB cache
128 - 512 MB
100 MHz
SDRAM
Via
S3 Savage IX8
8 MB SGRAM
AGP 2x
Cirrus
CS4264
CS4297A
6 GB12 GB18 GB20 GB Ultrabay 2000
ThinkLight
UltraPort
56K Modem
Li-Ion Battery
(4 hr)
T21Oct 2000??13.3" XGA 1024×768
14.1" XGA 1024×768
14.1" SXGA+ 1400×1050
Pentium III - 750, 800, or 850 MHz
SpeedStep
100 MHz Bus
256 KB cache
Via
S3 Savage IX8 or IX8+
8 MB SGRAM
AGP 2x
10 GB20 GB32 GB
T22Mar 2001?? Pentium III - 800 or 900 MHz, or 1 GHz
SpeedStep
100 MHz Bus
256 KB cache
Via
S3 Savage IX8+
8 MB SGRAM
AGP 2x
15 GB30 GB32 GB
T22
(SB)
Mar 2001??14.1" XGA 1024×768
14.1" SXGA+ 1400×1050
Pentium III - 900 MHz or 1 GHz
SpeedStep
100 MHz Bus
256 KB cache
15 GB30 GB32 GB48 GB
T23Jul 2001??13.3" XGA 1024×768
14.1" XGA 1024×768
14.1" SXGA+ 1400×1050
Pentium III - 866 MHz or 1.13 GHz
SpeedStep
133 MHz Bus
512 KB cache
128 MB - 1 GB
133 MHz
SDRAM
Via
S3 Super Savage IXC16
16MB SGRAM
AGP 4x
Cirrus
CS4299
15 GB30 GB48 GB Ultrabay 2000
ThinkLight
UltraPort
56K Modem
802.11b Modem
Li-Ion Battery
T23
(Fall)
Oct 2001??14.1" XGA 1024×768
14.1" SXGA+ 1400×1050
Pentium III - 1.0, 1.13 or 1.2 GHz
SpeedStep
133 MHz Bus
512 KB cache
30 GB40 GB48 GB Ultrabay Plus
ThinkLight
UltraPort
56K Modem
WLAN
Li-Ion Battery
T23
(Ed)
Apr 2002??14.1" XGA 1024×768 Pentium III - 1.0 GHz
SpeedStep
133 MHz Bus
512 KB cache
256 MB - 1 GB
133 MHz
SDRAM
20 GB40 GB80 GB Ultrabay Plus
ThinkLight
UltraPort
WLAN
Li-Ion Battery
T23

(02)

Jun 2002?? Pentium III - 1.0, 1.13 or 1.2 GHz
SpeedStep
133 MHz Bus
512 KB cache
20 GB30 GB40 GB80 GB Ultrabay Plus
ThinkLight
56K Modem
WLAN
Li-Ion Battery

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References

ThinkPad T series
Preceded by IBM ThinkPad T20 series
May 2000-July 2003
Succeeded by