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The New King?


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The New Kin

AMD’s kick ass new EPYC Rome CPUs are here and boy are they throwing Intel around like a rag doll 2

The New King?



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AMD’s kick ass new EPYC Rome CPUs are here and boy are they throwing Intel around like a rag doll, with ServeTheHome setting a new world record on a dual-CPU rig using two AMD EPYC 7742 processorSTH compared the dual AMD EPYC 7742 chips against four Intel Xeon Platinum 8180M processors, which battles out

Setting a new world record . . . not only cheaper but it is also faster


the 64C/128T processor from AMD against Intel’s best 28C/56T offering with some very, very surprising results. The AMD system is not only much cheaper, but it is also faster. AMD EPYC 7742: 64C/128T $6950 each (2 x $13,900) Intel Xeon Platinum 8180M: 28C/56T - $13,011 each ($52,044) This means that STH ran benchmarks with 128C/256T of power from AMD and its EPYC 7742 processors, while the quad-CPU rig from Intel packed just 112C/224T in comparison, but cost over

Lisa Sue holding up a prototype Epyc Rome at CES 2019

The New King?

3x as much. STH ran Geekbench 4 on the server chips, with AMD EPYC 7742s in the dual CPU configuration scoring multi-core results of between 184,000 and 193,000. This is much higher than the Dell PowerEdge R840 which packs 4 x Intel Xeon Platinum 8180M processors and a multi-core score of 155,050.

up to five times the performance per dollar of intel Wrapping up we have the EPYC 7742 processors offering you 24% more performance while costing 73% less. This seems like a true no-brainer, and another big win for AMD and its new EPYC ‘Rome’ CPUs. We recently published slides from a now-deleted HPC presentation that showcased some interesting facts about AMD’s upcoming Zen 3 Milan platform and while that was informative, it wasn’t the full picture. As it turns out, however, Planet3DNow has managed to get their hands on the complete set

and there are a few more choice slides in here. AMD’s EPYC 7742 CPU provides up to five times the performance per $ of Intel’s Xeon Platinum 8280 (2SP) Let’s start with the SpecIntRate_2017_rate_ base figures. This is one of the more well-known performance estimates for high-performance computing and is a category that has historically been dominated by Intel. Intel’s Cascade Lake-based Intel Xeon 8280 scores 359

points here. It is worth noting here that this is a dual-socket system at 28 cores each for a total of 56 cores. AMD’s EPYC 7742 64-core processor on the other hand scores 654 points. This is roughly twice the performance of


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the Intel counterpart and if you think this is impressive, wait till you consider the pricing implications. AMD’s first-generation fo EPYC was great but it was lacking in the HPC department and Intel was still arguably justified in charging a premium. The Rome CPU, however, puts an irrevocable end to that. Not only is it faster in HPC by a long shot, but AMD has still managed to retain its consumer-friendly pricing. The end result? You are looking at a CPU 6

worth $6,950 beating out a $20,000 system. If you translate this to a performance per dollar figure, you are looking at a 5.2x lead for the AMD part! That is absolutely insane and I am willing to wager whatever TCO (total cost of ownership) model you use, this is going to be a significant factor. We see a somewhat similar situation in the GROMACS ARCHERII benchmark where the cascade lake 8280 setup achieves

The New King?

4.498 nanoseconds per day while the EPYC 7742 scores 6.329 nanoseconds per day. This is a pretty huge speed up and something that is further expounded by the differential in price. Most HPC decisions are made using performance per dollar and Total Cost of Ownership (TCO) which includes ancillary costs like cooling, power consumption, ecosystem costs etc. While Intel has historically had better TDPs, this pretty much goes out of

the window here because 2x Xeons will always consume more power than AMD counterparts. The solution is to go towards Intel’s AP based SKUs that will offer equivalent performance in a single package. The downside? those are even more expensive than these ones!


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