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The Exiled · 20.09.2017., 22:16

EPYC headed for the top of the charts!

Citiraj:

...it became clear that while AMD is very competitive at the high-end, its mainstream offerings are competing with de-featured Xeon Silver CPUs and absolutely obliterate what Intel is offering.

The EPYC 7351P, which should sell for roughly $750 was tested against Intel's Xeon Silver 4108 which runs about $440 in various server applications such as GROMACS, OpenSSL and even a chess benchmark. The tests were done with single socket EPYCs, the "P" series, which are offered at a significant discount when compared to AMD's dual socket family; benchmarked against Intel's Xeon Silver in both single and dual socket configurations. The only time that the Xeon's performance came close to the single socket 7351P were when they were configured in dual socket systems, even then AMD's EPYC chip came out on top, often by a significant margin.

Raw performance is not the only advantage AMD offers on EPYC, the feature sest also far outstrips the somewhat watered down Xeon Silver family. The single socket 7351P offers 128 PCIe lanes while a dual socket Xeon Silver can only offer 96 and EPYC can handle up to 2TB of DDR4-2666 in its eight channel memory controller whereas Intel is limited to 1.5TB DDR4-2400 in a dual socket server nor can it support dual AVX-512 nor Omni-Path fabric.

AMD is delivering a lot of performance in the sub $1000 segment. At the same time, that comes at the expense of power consumption. If you are saving $1000 on CPUs and systems and spending $15/ mo for another .12kW, that is a fairly easy TCO calculation to do. Intel does have some advantages that come with the maturity of their platform, including superb NVMe hotswap support as well as QuickAssist and they do have higher end Xeon Gold chips which include the aforementioned features that the Xeon Silver line lacks, however they are also significantly more expensive than EPYC.

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