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AMD EPYC 7551 vs EPYC 7451

The AMD EPYC 7451 is newer than AMD EPYC 7551 is around 11% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 17 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 7551×AMD EPYC 7451+ ADD
Price $124.95 - BUY Search Online
Socket TypeSP3SP3
CPU ClassServerServer
Clockspeed2.0 GHz2.3 GHz
Turbo SpeedUp to 3.0 GHzUp to 3.2 GHz
# of Physical Cores32 (Threads: 64)24 (Threads: 48)
CacheL1: 3,072KB, L2: 16.0MB, L3: 64MBL1: 2,304KB, L2: 12.0MB, L3: 64MB
TDP180W180W
Yearly Running Cost$32.85$32.85
Other
First Seen on ChartQ3 2017Q1 2018
# of Samples116
CPU Value207.814.5
Single Thread Rating(% diff. to max in group)1766(-9.7%)1955(0.0%)
CPU Mark(% diff. to max in group)25960(0.0%)25864(-0.4%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 25th of April 2025 - Higher results represent better performance
AMD EPYC 7551
25,960
AMD EPYC 7451
25,864
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 25th of April 2025 - Higher results represent better value
AMD EPYC 7551
207.8
AMD EPYC 7451
14.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 25th of April 2025 - Higher results represent better performance
AMD EPYC 7551
1,766
AMD EPYC 7451
1,955
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 7551 AMD EPYC 7451
Max TDP180W180W
Power consumption per day (kWh)0.360.36
Running cost per day$0.090$0.090
Power consumption per year (kWh)131.4131.4
Running cost per year$32.85$32.85
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.