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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD EPYC 9555 64- vs EPYC 9B45

The AMD EPYC 9B45 is newer than AMD EPYC 9555 64-Core and is around 19% faster in multi-threaded (CPU Mark) testing. The AMD EPYC 9B45 is around -6% slower in single-thread testing. The values below were tabulated from a combined 6 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 9B45+ ADD
Price Search Online Search Online
Socket TypeNA2SP5
CPU ClassNA2Server
Clockspeed4.4 GHz2.1 GHz
Turbo SpeedNA2Up to 3.7 GHz
# of Physical Cores64 (Threads: 128)32 (Threads: 256)
CacheNA2L1: 10,160KB, L2: 127.0MB, L3: 512MB
TDPNA2390W
Yearly Running CostNA$71.18
Other
First Seen on ChartQ1 2025Q2 2025
# of Samples15
CPU Rank66
CPU Value0.011.7
Single Thread Rating(% diff. to max in group)3759(0.0%)3540(-5.8%)
CPU Mark(% diff. to max in group)133253(-16.1%)158790(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 16th of March 2026 - Higher results represent better performance
AMD EPYC 9555 64-Core
133,253
AMD EPYC 9B45
158,790
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 16th of March 2026 - Higher results represent better value
AMD EPYC 9555 64-Core
NA
AMD EPYC 9B45
11.7
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 16th of March 2026 - Higher results represent better performance
AMD EPYC 9555 64-Core
3,759
AMD EPYC 9B45
3,540
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 9B45
Max TDPNA390W
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.