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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD EPYC 9555 64- vs EPYC 9655P

The AMD EPYC 9555 64-Core is newer than AMD EPYC 9655P and is around -17% slower in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. The values below were tabulated from a combined 18 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×AMD EPYC 9555 64-Core×AMD EPYC 9655P+ ADD
Price Search Online Search Online
Socket TypeNA2SP5
CPU ClassNA2Server
Clockspeed4.4 GHz2.6 GHz
Turbo SpeedNA2Up to 4.5 GHz
# of Physical Cores64 (Threads: 128)96 (Threads: 192)
CacheNA2NA2
TDPNA2400W
Yearly Running CostNA$73.00
Other
First Seen on ChartQ1 2025Q4 2024
# of Samples117
CPU Rank65
CPU Value0.014.8
Single Thread Rating(% diff. to max in group)3759(-2.3%)3849(0.0%)
CPU Mark(% diff. to max in group)133253(-17.0%)160490(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.

CPU Mark Rating
As of 8th of March 2026 - Higher results represent better performance
AMD EPYC 9555 64-Core
133,253
AMD EPYC 9655P
160,490
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 8th of March 2026 - Higher results represent better value
AMD EPYC 9555 64-Core
NA
AMD EPYC 9655P
14.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 8th of March 2026 - Higher results represent better performance
AMD EPYC 9555 64-Core
3,759
AMD EPYC 9655P
3,849
PassMark Software © 2008-2026
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
AMD EPYC 9555 64-Core AMD EPYC 9655P
Max TDPNA400W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.