Socket AM5

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Socket AM5
AMD AM5 Socket.png
Release dateSeptember 27, 2022 (2022-09-27)
Designed by AMD
Manufactured byLotes, Foxconn
Type LGA-ZIF
Chip form factors Flip-chip
Contacts1718
FSB protocol PCI Express, Infinity Fabric
Voltage range0.8V (cores)
1.05V (in-package I/O die)
Processor dimensions40mm × 40mm
1,600mm2
Processors Ryzen: Epyc:
  • Epyc 4004 Series
  • Epyc 4005 Series
Predecessor AM4
Memory support DDR5

This article is part of the CPU socket series

Socket AM5 (LGA 1718) is a zero insertion force flip-chip land grid array (LGA) [1] CPU socket designed by AMD that is used for AMD Ryzen microprocessors starting with the Zen 4 microarchitecture. [2] [3] AM5 was launched in September 2022 and is the successor to AM4. [4]

Contents

The Ryzen 7000 series processors were the first AM5 processors. The 7000 series added support for PCI Express 5.0 and DDR5. [5]

Background

In March 2017, with the launch of its new Zen processors, AMD used the AM4 socket that they had previously used with their Bristol Ridge (derived from Excavator) powered Athlon X4 and some A-Series, a pin grid array (PGA) socket that they promised to support until 2020. [6]

Announcement

At CES 2022, AMD CEO Lisa Su unveiled the AM5 socket and the integrated heat spreader design for the upcoming Ryzen 7000 processors due in late 2022.

On May 23, 2022, AMD provided details about the AM5 socket, its corresponding motherboards, and Ryzen 7000 Series CPUs at Computex in Taipei, Taiwan. [7] At Computex, motherboard vendors ASRock, Gigabyte and others debuted their new X670 motherboards featuring the AM5 socket. [8] [9]

AMD stated that it plans to support the AM5 socket for a number of years as it did with the AM4 socket. [10] During the Ryzen 7000 series reveal on August 29, 2022, AMD confirmed that it would support the AM5 socket until at least 2025. [11] At Computex 2024, AMD announced that this support period would then be extended through 2027. [12]

Features

Image of the AM5 socket with the Socket Actuation Mechanism (SAM) in open position, exposing the pins AM5 Socket Open.jpg
Image of the AM5 socket with the Socket Actuation Mechanism (SAM) in open position, exposing the pins
Pin map of the AM5 socket from AMD Socket AM5 pinmap.svg
Pin map of the AM5 socket from AMD

Heatsink

The AM5 socket specifies the 4 holes for fastening the heatsink to the motherboard to be placed at the corners of a rectangle with a lateral length of 54×90 mm, as well as UNC #6-32 screw threads for the backplate, identical to those of the preceding AM4 socket. Furthermore, the Z-height of the CPU package is kept the same as that of AM4, for backward compatibility of heatsinks. [16]

Unlike AM4, the backplate on AM5 is not removable, as it also serves the purpose of securing the CPU retention mechanism for the LGA socket. [17]

Not all existing CPU coolers from AM4 are compatible. In particular, coolers that use their own backplate mounting hardware, instead of the default motherboard-provided backplate, will not work. Some cooler manufacturers are offering upgrade kits to allow incompatible older coolers to be used on AM5. [18] [19]

Chipsets

The AM5 chipsets line-up had been criticised for being confusing [20] due to chipsets with very similar prefixes (and tens-digit-place designation) having very different meanings between 600 and 800 series. (e.g. X670 and X870 would be considered having very similar names, based on naming of previous chipset generations, but X870 is mostly identical to B650E (not X670) in terms of architecture and features provided by the cheapest itself) Following highlight some of the differences, refer to the feature table for full comparison.

600 series

The AM5 600 series chipsets were released alongside the release of Ryzen 7000 series desktop CPUs.

X670/X670E uses 2 "Promontory 21" silicon by ASMedia. One of which connected to the CPU, and the second one daisy chained to the first one.

800 series

The AM5 800 series chipsets were released roughly around or after the Ryzen 9000 series desktop CPUs' launch.

X870E also daisy chained 2 "Promontory 21" silicon as X670/X670E. (Note that is not the case for X870 despite the name)

Feature table

Branding
A620 / A620AB650B650EX670X670EB840B850X870X870E
Processor features support
CPU
support
Zen 4 Yes
Zen 5 Yes [a] Yes
CPU overclocking NoYesNoYes
PCIe 5.0
support [b]
x16 slotNoNoYesNoYesNoNoYes
M.2 slot [c] + 4× GPP [d] NoM.2: OptionalYesNoM.2: YesYes
GPP: NoGPP: No
USB
ports
USB 3.2 Gen 2x14
Chipset features
PCIe lanes [e] Gen 4None×8×12None×8×12
Gen 3Up to ×8Up to ×4Up to ×8Up to ×10Up to x4Up to ×8
USB
ports
USB 2.0 612612
USB 3.2 Gen 1x1
(5 Gb/s)
2None2None
USB 3.2 Gen 2x1
(10 Gb/s)
2with max x2 ports:
4
without x2 ports:
6 [f]
with max x2 ports:
8
without x2 ports:
12 [g]
2with max x2 ports:
4
without x2 ports:
6 [f]
with max x2 ports:
8
without x2 ports:
12 [g]
USB 3.2 Gen 2x2
(20 Gb/s)
NoneUp to 1 [f] Up to 2 [g] NoneUp to 1 [f] Up to 2 [g]
Storage
features
SATA III portsUp to 4Up to 8Up to 4Up to 8
RAID 0, 1, 10
Platform features
USB4 Gen 3×2 (40 Gb/s) [h] OptionalYes
Wi-Fi [h] Optional [i]
PCIe x16 slot configurations1×161×16 or 2×81×161×16 or 2×8
Multi-GPU CrossFire NoYesYesYesYesNoYesYes
SLI NoNoNoNoNoNoNoNoNo
Chipset
links
To CPUPCIe 4.0 ×4
InterchipsetPCIe 4.0 ×4PCIe 4.0 ×4
Chipset TDP ~4.5 W~7 W~14 W [j] ~7 W~14 W [j]
ArchitecturePromontory 22 / 21 x1 (A620) [21]
Promontory 19 x1 (A620A) [22]
Promontory 21
×1
Promontory 21
×2
Promontory 21
×1
Promontory 21
×2
Release dateMar 31, 2023Oct 10, 2022Sep 27, 2022Jan 6, 2025Sep 2024
References [23] [20] [24] [25] [23] [20] [26] [27] [28] [23] [20] [23] [20] [29] [30] [31]
  1. More likely need a BIOS update if the motherboard was manufactured in a earlier date.
  2. Support for Gen5 speeds on lanes directly from CPU to expansion and M.2 slots, and general-purpose lanes. (Also depends on CPU PCIe support. Some CPUs have as low as 10 lanes of PCIe 4.0 available.)
  3. The "first" M.2 slot.
  4. Some motherboards connect GPP lanes to a second M.2 slot.
  5. PCIe lanes provided by the chipset. The CPU provides other PCIe 5.0 and/or 4.0 lanes.
  6. 1 2 3 4 The motherboard maker may configure the total of 6 USB 3.2 lanes provided by the chipset into "4× USB3.2 Gen 2x1 and 1× USB3.2 Gen 2x2" or "6× USB3.2 Gen 2x1 and 0× USB3.2 Gen 2x2" ports.
  7. 1 2 3 4 The motherboard maker may configure the total of 12 USB 3.2 lanes provided by the chipset into one of the following:
    "8× USB3.2 Gen 2x1 and 2× USB3.2 Gen 2x2",
    "10× USB3.2 Gen 2x1 and 1× USB3.2 Gen 2x2", or
    "12× USB3.2 Gen 2x1 and 0× USB3.2 Gen 2x2"
  8. 1 2 Provided by a third-party controller.
  9. AMD did not mandate which Wi-Fi version should be paired with which chipset (unlike USB4 is mandatory with some chipsets). Motherboard makers may omit Wi-Fi on some models.
  10. 1 2 Two Promontory 21 chipsets are present, each having a TDP of ~7 W, giving a total TDP of ~14 W.

See also

Notes

  1. Thermal design power
  2. Electrical power dissipation

References

  1. Ridley, Jacob (January 4, 2022). "AMD shows off future Zen 4 Ryzen CPUs and they look absolutely wild". PC Gamer. Retrieved January 4, 2022.
  2. Ganti, Anil (May 25, 2021). "New leak envisions what the AM5 socket could look like and highlights key AMD Ryzen 7000 Raphael specs". Notebook Check. Retrieved July 8, 2021.
  3. Liu, Zhiye (May 22, 2021). "AM5 Socket May Be AMD's Doorway To DDR5". Tom's Hardware. Retrieved July 8, 2021.
  4. Hill, Luke (August 30, 2022). "AMD Details Zen 4 Ryzen 7000 and AM5 – Launch September 27th". KitGuru. Retrieved March 7, 2023.
  5. AMD (January 4, 2022). "AMD 2022 Product Premiere - Recap". YouTube. Retrieved February 25, 2022.
  6. Castle, Katherine (April 19, 2018). "AMD confirm AM4 motherboards will be supported until 2020". Rock Paper Shotgun. Retrieved May 7, 2022.
  7. James, Dave (May 20, 2022). "Dr. Lisa Su is teasing AMD Zen 4 CPU details on Monday and Gigabyte is promising AM5 boards". PC Gamer. Retrieved May 20, 2022.
  8. Hill, Brandon (May 20, 2022). "Gigabyte Confirms X670 AMD Ryzen 7000 Zen 4 AM5 Motherboards for Computex". Tom's Hardware. Retrieved May 20, 2022.
  9. Tyson, Mark (May 20, 2022). "Computex Organizer Confirms ASRock AMD X670E Motherboards Incoming". Tom's Hardware. Retrieved May 20, 2022.
  10. Hagedoom, Hilbert (January 10, 2022). "AMD aims for AM5 to have a similar lifespan to AM4 (5 years)". The Guru of 3D. Retrieved May 7, 2022.
  11. James, Dave (August 29, 2022). "AMD plans to support the new AM5 socket through 2025 and beyond". PC Gamer. Retrieved August 30, 2022.
  12. Evanson, Nick (June 3, 2024). "AMD promises AM5 socket life support through to 2027 and beyond". PC Gamer. Retrieved June 5, 2024.
  13. Dexter, Alan (April 25, 2022). "AMD's AM5 platform won't support DDR4 at launch". PC Gamer. Retrieved May 7, 2022.
  14. Smith, Ryan; Bonshor, Gavin (September 26, 2022). "AMD Zen 4 Ryzen 9 7950X and Ryzen 5 7600X Review: Retaking The High-End". AnandTech. Archived from the original on September 26, 2022. Retrieved October 1, 2022.
  15. Alcorn, Paul (May 26, 2022). "AMD Corrects Socket AM5 for Ryzen 7000 Power Specs: 230W Peak Power, 170W TDP (Updated)". Tom's Hardware. Retrieved May 29, 2022.
  16. Leather, Anthony (August 8, 2022). "Beware Socket AM5 cooler compatibility". Custom PC. Retrieved October 19, 2022.
  17. Killian, Zak (October 3, 2022). "How To Know If Your Existing CPU Cooler Is Compatible With AM5 For Zen 4 Builds". HotHardware. Retrieved October 19, 2022.
  18. Tyson, Mark (September 22, 2022). "Noctua Confirms Its AMD AM4 Compatible Coolers Will Also Support AM5 Platforms". Tom's Hardware. Retrieved October 19, 2022.
  19. "EK Reveals AM5 Compatibility Roadmap for All CPU Cooling Products". TechPowerUp. September 5, 2022. Retrieved October 19, 2022.
  20. 1 2 3 4 5 Schiesser, Tim (October 15, 2024). AM5 Chipsets Compared - X870E vs X670E vs X870 vs X670 vs B650 vs B850 vs B840 vs A620 (Video). Hardware Unboxed via YouTube.
  21. Hill, Brandon (January 30, 2023). "Incoming AMD A620 Chipset Looks to Fulfill $125 Motherboard Pledge". Tom's Hardware. Retrieved September 16, 2025.
  22. Liu, Zhiye (March 1, 2024). "Biostar's new AMD motherboard could be perfect for budget builds — A620A motherboard arrives with a rebadged B550 chipset". Tom's Hardware. Retrieved September 16, 2025.
  23. 1 2 3 4 "AMD Socket AM5 Chipset". AMD. Retrieved June 7, 2024.
  24. Peak, Sebastian (March 31, 2023). "AMD Announces A620 Chipset for Ryzen 7000 Series CPUs". PC Perspective. Retrieved April 2, 2023.
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  26. Smith, Ryan; Bonshor, Gavin (September 26, 2022). "AMD Zen 4 Ryzen 9 7950X and Ryzen 5 7600X Review: Retaking The High-End". AnandTech. Retrieved October 2, 2022.
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