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