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]
Features
Supports
DDR5 in dual-channel configuration.
DDR4 is not supported, unlike
Intel's
LGA 1700 socket.[12]
Support for
PCIe 5.0 lanes from the CPU on X670E and B650E, optional on X670 and B650 chipsets.[13]
Achieves 170W TDP[a] and a Package Power Tracking (PPT)[b] limit up to 230W.[14]
Heatsink
The AM5 socket specifies the 4 holes for fastening the heatsink to the motherboard to be placed in 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.[15]
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.[16]
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.[17][18]
^ PCIe lanes provided by the chipset. The CPU provides other PCIe 5.0 lanes.
^ USB 3.2 Gen2x2, USB 3.2 Gen2, USB 3.2 Gen1, USB 2.0
^
ab E or "Extreme" branding is a guarantee that
PCIe 5.0 is supported on both the motherboard's graphics slot and
NVMe slots. E models provide access to all 24
PCIe 5.0 lanes from the processor. Non-E models only support 8 PCIe 5.0 lanes on NVMe slots while the rest of the lanes on graphics slots are dropped to
PCIe 4.0.
^Each Promontory 21 chipset provides 4 SATA ports for a total of 8.
^Motherboards marketed as X670 and X670E feature two Promontory 21 chipsets, each having a TDP of ~7W.
See also
Socket sTR5, a socket for AMD HEDT and workstation CPUs