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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Xeon 6515P vs Xeon 6521P

Both CPUs were released (or first benchmaked) within the last year, but Intel Xeon 6521P is significantly faster in multi-threaded (CPU Mark) testing. The Intel Xeon 6521P is around 30% faster in single-thread testing. Also, Intel Xeon 6521P uses around 40% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 7 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.

×Intel Xeon 6515P×Intel Xeon 6521P+ ADD
Price Search Online Search Online
Socket TypeFCLGA4710FCLGA4710
CPU ClassServerServer
Clockspeed2.3 GHz2.6 GHz
Turbo SpeedUp to 3.8 GHzUp to 4.1 GHz
# of Physical Cores16 (Threads: 32)24 (Threads: 48)
CacheL1: 1,792KB, L2: 32.0MB, L3: 72MBNA2
TDP150W225W
Yearly Running Cost$27.38$41.06
Other
First Seen on ChartQ3 2025Q2 2025
# of Samples25
CPU Rank333136
CPU Value55.051.8
Single Thread Rating(% diff. to max in group)2389(-23.3%)3116(0.0%)
CPU Mark(% diff. to max in group)40720(-37.1%)64761(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 6th of March 2026 - Higher results represent better performance
Intel Xeon 6515P
40,720
Intel Xeon 6521P
64,761
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 6th of March 2026 - Higher results represent better value
Intel Xeon 6515P
55.0
Intel Xeon 6521P
51.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 6th of March 2026 - Higher results represent better performance
Intel Xeon 6515P
2,389
Intel Xeon 6521P
3,116
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.
Intel Xeon 6515P Intel Xeon 6521P
Max TDP150W225W
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.