AMD EPYC

AMD EPYC processors are currently among the most powerful server processors on the market. The current 4th generation of AMD EPYC processors was introduced on November 10, 2022 and includes processors with up to 96 CPU cores that can run up to 192 threads per processor simultaneously. A maximum of systems with two SP5 sockets / two processors are possible, which enables servers with 192 CPU cores and 384 threads.

The CPU cores of the AMD Genoa processors are based on the Zen 4 architecture, which is also used in the AMD Ryzen 7000 processors for private use, for example. The EPYC server processors combine up to 12 chiplets that are internally connected to each other via up to 64 CLX lines. Each chiplet has up to 32 MB level 3 cache.

A maximum of 6 TB of DDR5-4800 main memory (ECC) can be used in up to 12 memory channels per processor/socket. Each processor has a memory bandwidth of up to 461 GB/s. The processors are manufactured at TSMC using the N5 (5 nm) process. External devices can be connected via 128 PCIe 5.0 lines; when using two sockets, 160 PCIe 5.0 lines are available.

All AMD EPYC CPUs

	Processor	Generation
	AMD EPYC 9965 192C 384T @ 2.25 GHz	5.
	AMD EPYC 9865 160C 320T @ 2.10 GHz	5.
	AMD EPYC 9845 160C 320T @ 2.00 GHz	5.
	AMD EPYC 9825 144C 288T @ 2.20 GHz	5.
	AMD EPYC 9755 128C 256T @ 2.70 GHz	5.
	AMD EPYC 9745 128C 256T @ 2.40 GHz	5.
	AMD EPYC 9655P 96C 192T @ 2.60 GHz	5.
	AMD EPYC 9655 96C 192T @ 2.60 GHz	5.
	AMD EPYC 9645 96C 192T @ 2.10 GHz	5.
	AMD EPYC 9575F 64C 128T @ 3.30 GHz	5.
	AMD EPYC 9565 72C 144T @ 3.10 GHz	5.
	AMD EPYC 9555P 64C 128T @ 3.20 GHz	5.
	AMD EPYC 9555 64C 128T @ 3.20 GHz	5.
	AMD EPYC 9535 64C 128T @ 2.20 GHz	5.
	AMD EPYC 9475F 48C 96T @ 3.70 GHz	5.
	AMD EPYC 9455P 48C 96T @ 3.15 GHz	5.
	AMD EPYC 9455 48C 96T @ 3.15 GHz	5.
	AMD EPYC 9445 48C 96T @ 3.00 GHz	5.
	AMD EPYC 9375F 32C 64T @ 3.80 GHz	5.
	AMD EPYC 9365 36C 72T @ 3.30 GHz	5.

AMD EPYC generation list

Name	Generation	Segment	Technology	Architecture
AMD EPYC 9005	5.	Server	4 nm	Turin (Zen 5 / Zen 5c)
AMD EPYC 4004	4.	Server	5 nm	Raphael (Zen 4)
AMD EPYC 8004/9004	4.	Server	5 nm	Bergamo/Siena (Zen 4c)
AMD EPYC 9004	4.	Server	5 nm	Genoa / Genoa-X (Zen 4)
AMD EPYC 7003	3.	Server	7 nm	Milan (Zen 3)
AMD EPYC 7002	2.	Server	7 nm	Rome (Zen 2)
AMD EPYC 7001	1.	Server	14 nm	Naples (Zen)
AMD EPYC Embedded 3000	1.	Enterprise / Embedded	14 nm	Snowy Owl (Zen)

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