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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 L5638 @ 2.00GHz×Intel Xeon E5645 @ 2.40GHz+ ADD
Price$69.91$81.311
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.0 GHz2.4 GHz
Turbo SpeedUp to 2.4 GHzUp to 2.7 GHz
# of Physical Cores6 (2 logical cores per physical)6 (2 logical cores per physical)
Max TDP60W80W
Yearly Running Cost$10.95$14.60
First Seen on ChartQ2 2011Q2 2011
# of Samples1167
Single Thread Rating9491093
CPU Mark56226422

CPU Mark Rating
As of 11th of December 2019 - Higher results represent better performance
Intel Xeon L5638 @ 2.00GHz
 5,622
Intel Xeon E5645 @ 2.40GHz
 6,422
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 11th of December 2019 - Higher results represent better value
Intel Xeon L5638 @ 2.00GHz
 80.43
Intel Xeon E5645 @ 2.40GHz
 78.99
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 11th of December 2019 - Higher results represent better performance
Intel Xeon L5638 @ 2.00GHz
 949
Intel Xeon E5645 @ 2.40GHz
 1,093
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 L5638 @ 2.00GHzIntel Xeon E5645 @ 2.40GHz
Max TDP60W80W
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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.