Socket AM4 is the socket for µOPGA-1331-packaged microprocessors designed by AMD for their Zen microarchitecture as a successor to Socket FM2+ and Socket AM3+.

Chipsets

Socket AM4 Platform [Edit]
Segment	Chipset	USB			SATA	SATAe	PCIe	RAID	Dual PCIe	Overclocking
		3.1 G1	3.1 G2	2.0
500-series (Zen+, Zen 2, Zen 3)
Mainstream	B550	2	6	6	8 + 4x NVME	0	16x Gen4	0,1,10	✔	✔
Enthusiast	X570	0	8	4	14 + 4x NVME	0	16x Gen4	0,1,10
400-series (Zen+)
Mainstream	B450	2	2	6	6 + 4x NVME	1	6x Gen3	0,1,10	✘	✔
Enthusiast	X470	6	2	6	10 + 4x NVME	2	8x Gen3	0,1,10	✔
300-series (Zen)
Small Form Factor	A300, B300	4	0	0	2 + 2x NVMe	1	4x Gen3	0,1	✘
	X300	4	0	0	2 + 2x NVMe	1	4x Gen3	0,1	✔
Entry-level	A320	6	1	6	4 + 2x NVMe	2	4x Gen2	0,1,10	✘	✘
Mainstream	B350	6	2	6	4 + 2x NVMe	2	6x Gen2	0,1,10		✔
Enthusiast	X370	6	2	6	6 + 2x NVMe	2	8x Gen2	0,1,10	✔