AMD 3rd Gen EPYC Milan ‘EPYC 7643’ CPU With 48 Zen 3 Cores & 3.45 GHz Boost Clocks Benchmarked – Single EPYC Faster Than Dual Xeons


An AMD EPYC Milan CPU based on the Zen 3 core architecture has once again been spotted within the Geekbench benchmark database, showcasing an impressive performance boost over the 2nd Gen EPYC Rome lineup. We had already seen a 32 core part compared to dual Intel Xeon CPUs and now we can also tell how fast a 48 core part will perform.

AMD EPYC 7643 'Milan' 48 Core / 96 Thread CPU Benchmarked, Up To 3.45 GHz All-Core Boost Clocks & Knocking Down Dual Intel Xeon's

Just like last time, the benchmark was carried out on a 1P (single-socket) server running the AMD EPYC 7543 CPU which is part of the 3rd Gen Milan lineup. The Milan lineup is based on the Zen 3 architecture and features a new core/cache configuration. The Wiwynn SV302A-U is a 1U rack that comes equipped with a total of 384 GB of DDR4 memory.

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The AMD EPYC 7643 CPU features the Zen 3 core architecture and is comprised of 48 cores and 96 threads. As for clock speeds, the chip has a rated base clock of 2.30 GHz and boosts up to 3.60 GHz which is quite a respectable clock rate for the processor. All cores were boosting close to 3.45 GHz.

Based on the clocks, we can assume that this part will have a TDP of 225W. The CPU also features 256 MB of L3 cache and 24 MB of L2 cache. It confirms that the chip is actually making use of 8 CCD's instead of four. The four CCD 32 core part would be configured for a different SKU with 128 MB of L3 cache.

AMD EPYC Milan 3rd Gen Server CPU Lineup:

CPU NameCores / ThreadsBase ClockBoost ClockL3 CacheL2 CacheTDPPrice
AMD EPYC 776364 / 1282.45 GHz3.500 GHz256 MB32 MB280W (cTDP 225W Down / 280W Up)$7890 US
AMD EPYC 771364 / 1282.00 GHz3.675 GHz256 MB32 MB225W (cTDP 225W Down / 240W Up)$7060 US
AMD EPYC 7713P64 / 1282.00 GHz3.675 GHz256 MB32 MB225W (cTDP 225W Down / 240W Up)$5010 US
AMD EPYC 766356 / 1122.00 GHz3.500 GHz256 MB24 MB240W (cTDP 225W Down / 240W Up)$6366 US
AMD EPYC 764348 / 962.30 GHz3.600 GHz256 MB24 MB225W (cTDP 225W Down / 240W Up)$4995 US
AMD EPYC 75F332 / 642.95 GHz4.000 GHz256 MB32 MB280W (cTDP 225W Down / 280W Up)$4860 US
AMD EPYC 754332 / 642.80 GHz3.700 GHz256 MB32 MB225W (cTDP 225W Down / 240W Up)$3761 US
AMD EPYC 7543P32 / 642.80 GHz3.700 GHz256 MB32 MB225W (cTDP 225W Down / 240W Up)$2730 US
AMD EPYC 751332 / 642.60 GHz3.650 GHz128 MB16 MB200W (cTDP 165W Down / 200W Up)$2840 US
AMD EPYC 745328 / 562.75 GHz3.450 GHz64 MB16 MB225W (cTDP 225W Down / 240W Up)$1570 US
AMD EPYC 74F324 / 483.20 GHz4.000 GHz256 MB12 MB240W (cTDP 225W Down / 240W Up)$2900 US
AMD EPYC 744324 / 482.85 GHz4.000 GHz128 MB12 MB200W (cTDP 165W Down / 200W Up)$2010 US
AMD EPYC 7443P24 / 482.85 GHz4.000 GHz128 MB12 MB200W (cTDP 165W Down / 200W Up)$1337 US
AMD EPYC 741324 / 482.65 GHz3.600 GHz128 MB16 MB180W (cTDP 165 Down / 200W Up)$1825 US
AMD EPYC 73F316 / 323.50 GHz4.000 GHz256 MB16 MB240W (cTDP 225W Down / 240W Up)$3521 US
AMD EPYC 734316 / 323.20 GHz3.900 GHz128 MB8 MB190W (cTDP 165W Down / 200W Up)$1565 US
AMD EPYC 731316 / 323.00 GHz3.700 GHz128 MB16 MB155W (cTDP 155W Down / 180W Up)$1083 US
AMD EPYC 7313P16 / 323.00 GHz3.700 GHz128 MB16 MB155W (cTDP 155W Down / 180W Up)$913 US
AMD EPYC 72F38 / 163.70 GHz4.100 GHz256 MB4 MB180W (cTDP 165 Down / 200W Up)$2468 US

In terms of performance, the CPU scored 5850 points in single-core and 121080 points in the multi-core tests. For comparison, a dual-chip Intel Xeon Platinum 8276 server with 56 cores & 112 thread processors only manages a score of 4913 points in single-core and 112457 points in the multi-core test. The Intel test platform was also configured with 192 GB of system memory while the AMD 3rd Gen EPYC Milan system was configured with 384 GB of system memory. So just for doing a better comparison, we found a result for a dual Xeon Platinum 8280 server with 56 cores and 112 threads that also featured 384 GB of system memory. This system scored 5048 points in the single-core & a higher 117171 points in the multi-core test.


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Compared to the AMD EPYC 7543, the 7643 posts a lower single-core score which is due to its lower boost clock but comes out 9% faster in multi-threaded performance. Do note that these results are still early and given the number of cores/threads that the EPYC 7643 offers over the 7543 & the fact that the Geekbench 4 is now considered an old benchmark, the actual performance jump could be much significant for Zen 3 based Milan chips.

In addition to the EPYC 7643, an entry of a 2P server has also been spotted, featuring two EPYC 7513 CPUs. Each CPU features 32 cores and 64 threads so that's a total of 64 cores and 128 threads on the HPE ProLiant XL225n Gen 10 plus rack that was spotted. The server was equipped with 512 GB of DDR4 memory. Each CPU features a 2.60 GHz base clock, 64 MB of L3 cache, and 16 MB of L2 cache. The AMD EPYC 7513 has a boost clock rated at 3.65 GHz but within this particular config, the CPUs were only operating at all core boosts of 1.8 GHz which is also why the score they reported is not as impressive.

“We’re on track to launch our third-generation EPYC Milan processors in March with a strong ecosystem of support.”


So in apples to apple comparison, the AMD EPYC Milan CPUs will have a tremendously higher lead and we are just taking general performance without mentioning the better performance/value and perf per watt which would translate to lower TCO when building a Milan server. The AMD 3rd Gen EPYC Milan CPUs are all set for an epic launch in March this year so stay tuned for more info on the next disruption in the server segment.

News Source: TUM_APISAK