iconcharts
0

CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD EPYC 9255 vs Intel Xeon 6521P

Both CPUs were released (or first benchmaked) within the last year, but Intel Xeon 6521P is around -15% slower in multi-threaded (CPU Mark) testing. The Intel Xeon 6521P is around -14% slower in single-thread testing. Also, Intel Xeon 6521P uses around 12% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 9 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 9255×Intel Xeon 6521P+ ADD
Price Search Online Search Online
Socket TypeSP5FCLGA4710
CPU ClassServerServer
Clockspeed4.0 GHz2.6 GHz
Turbo SpeedUp to 4.3 GHzUp to 4.1 GHz
# of Physical Cores24 (Threads: 48)24 (Threads: 48)
CacheL1: 80KB, L2: 1.0MB, L3: 128MBNA2
TDP200W225W
Yearly Running Cost$36.50$41.06
Other
First Seen on ChartQ2 2025Q2 2025
# of Samples54
CPU Value0.051.8
Single Thread Rating(% diff. to max in group)3653(0.0%)3126(-14.4%)
CPU Mark(% diff. to max in group)75809(0.0%)64801(-14.5%)
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 9th of November 2025 - Higher results represent better performance
AMD EPYC 9255
75,809
Intel Xeon 6521P
64,801
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 9th of November 2025 - Higher results represent better value
AMD EPYC 9255
NA
Intel Xeon 6521P
51.8
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 9th of November 2025 - Higher results represent better performance
AMD EPYC 9255
3,653
Intel Xeon 6521P
3,126
PassMark Software © 2008-2025
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 9255 Intel Xeon 6521P
Max TDP200W225W
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.