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Processors with 64 cores and over 800 MB of cache. AMD Epyc Milan-X Generation Revealed

In addition to the first of its kind Instinct MI200 accelerators, AMD also introduced new Epyc server processors.

Processors with 64 cores and over 800 MB of cache.  AMD Epyc Milan-X Generation Revealed

The new CPUs still belong to the third generation of Epyc and are based on the same Zen 3 architecture. But they received additional L3 cache, implemented using 3D V-Cache technology. Thanks to this, the amount of cache memory in the new CPUs is simply huge: it is 768 MB! In this case, this is a regular internal cache with a volume of 256 MB, as in the usual third-generation Epyc and plus an additional eight memory chips of 64 MB (one chip for each chiplet). AMD itself generally speaks of 804 MB of cache memory, but in this case, the L2 cache is also considered (32 MB). Otherwise, there are practically no differences from last year’s CPUs: the same number of cores remain, the frequencies have changed minimally.

CPU # Of cores / threads Frequencies, GHz L3 cache, MB TDP, W.
Epyc 7773X 64/128 2,2-3,5 512+256 280
Epyc 7573X 32/64 2,8-3,6 512+256 280
Epyc 7473X 24/48 2,8-3,7 512+256 240
Epyc 7373X 16/32 3,05-3,8 512+256 240

AMD speaks of performance gains in a wide range: from 33% to 66%, but the gain is provided solely by the cache memory, which means that it will not manifest itself in all tasks. But the socket has not changed, and older motherboards will support new CPUs after a BIOS update. The processors will be available as off-the-shelf systems early next year.

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