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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 E3-1270 V2 @ 3.50GHz+ ADD
Price$81.311$189.99 BUY NOW!
Socket TypeLGA1366LGA1155
CPU ClassServerServer
Clockspeed2.4 GHz3.5 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 TDP80W69W
Yearly Running Cost$14.60$12.59
First Seen on ChartQ2 2011Q2 2012
# of Samples67204
Single Thread Rating10932088
CPU Mark64229472

CPU Mark Rating
As of 6th of December 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 6,422
Intel Xeon E3-1270 V2 @ 3.50GHz
 9,472
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 6th of December 2019 - Higher results represent better value
Intel Xeon E5645 @ 2.40GHz
 78.99
Intel Xeon E3-1270 V2 @ 3.50GHz
 49.86
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 6th of December 2019 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
 1,093
Intel Xeon E3-1270 V2 @ 3.50GHz
 2,088
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 E3-1270 V2 @ 3.50GHz
Max TDP80W69W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
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.