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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 X5660 @ 2.80GHz+ ADD
Price$81.311$63.07 BUY NOW!
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.4 GHz2.8 GHz
Turbo SpeedUp to 2.7 GHzUp to 3.2 GHz
# of Physical Cores6 (2 logical cores per physical)6 (2 logical cores per physical)
Max TDP80W95W
Yearly Running Cost$14.60$17.34
First Seen on ChartQ2 2011Q2 2010
# of Samples67209
Single Thread Rating10931304
CPU Mark64227589

CPU Mark Rating
As of 9th of December 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 6,422
Intel Xeon X5660 @ 2.80GHz
 7,589
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 9th of December 2019 - Higher results represent better value
Intel Xeon E5645 @ 2.40GHz
 78.99
Intel Xeon X5660 @ 2.80GHz
 120.33
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 9th of December 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 1,093
Intel Xeon X5660 @ 2.80GHz
 1,304
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 X5660 @ 2.80GHz
Max TDP80W95W
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Power consumption per year (kWh)abcabc
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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.