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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

CPU Performance Comparison

Performance of selected CPUs can be found below. The values for the CPU are determined from thousands of PerformanceTest benchmark results and is updated daily.


×Intel Xeon E5645 @ 2.40GHz×Intel Xeon X5687 @ 3.60GHz+ ADD
Price$81.311$56.321
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.4 GHz3.6 GHz
Turbo SpeedUp to 2.7 GHzUp to 3.9 GHz
# of Physical Cores6 (2 logical cores per physical)4 (2 logical cores per physical)
Max TDP80W130W
Yearly Running Cost$14.60$23.73
First Seen on ChartQ2 2011Q2 2011
# of Samples6588
Single Thread Rating10921606
CPU Mark64246967

CPU Mark Rating
As of 17th of November 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 6,424
Intel Xeon X5687 @ 3.60GHz
 6,967
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 17th of November 2019 - Higher results represent better value
Intel Xeon E5645 @ 2.40GHz
 79.01
Intel Xeon X5687 @ 3.60GHz
 123.71
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 17th of November 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 1,092
Intel Xeon X5687 @ 3.60GHz
 1,606
PassMark Software © 2008-2019

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 E5645 @ 2.40GHzIntel Xeon X5687 @ 3.60GHz
Max TDP80W130W
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Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.