[8][9][10][11] The AM4 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.

[2][18][21] In 2020, AMD faced some criticism when it was announced on May 7 that its Zen 3-based Ryzen 5000 microprocessors would only be compatible with newer 500-series chipset AM4 motherboards.

[41][42][43] This was explained as motherboard BIOS's sizes not being large enough to support the full range of AM4 socket processors.

[41][44] On 19 May 2020, however, AMD changed its position and stated that Zen 3 would be coming to selected older X470 and B450 motherboards via a BIOS update.

[45][46][43] On 12 November 2021, according to TechPowerUp, ASUS and Gigabyte were the few vendors that allowed Ryzen 5000 on A320 motherboard, and according to Tom's Hardware, it was done by removing support for AMD's 7th Generation A-series and Athlon X4 series (Bristol Ridge) processors.