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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 X5550 @ 2.67GHz×Intel Xeon E5520 @ 2.27GHz+ ADD
Price$304.851$48.511
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.7 GHz2.3 GHz
Turbo SpeedUp to 3.1 GHzUp to 2.5 GHz
# of Physical Cores4 (2 logical cores per physical)4 (2 logical cores per physical)
Max TDP95W80W
Yearly Running Cost$17.34$14.60
First Seen on ChartQ2 2009Q1 2009
# of Samples89158
Single Thread Rating12621030
CPU Mark52704377

CPU Mark Rating
As of 12th of December 2019 - Higher results represent better performance
Intel Xeon X5550 @ 2.67GHz
 5,270
Intel Xeon E5520 @ 2.27GHz
 4,377
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 12th of December 2019 - Higher results represent better value
Intel Xeon X5550 @ 2.67GHz
 17.29
Intel Xeon E5520 @ 2.27GHz
 90.24
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 12th of December 2019 - Higher results represent better performance
Intel Xeon X5550 @ 2.67GHz
 1,262
Intel Xeon E5520 @ 2.27GHz
 1,030
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 X5550 @ 2.67GHzIntel Xeon E5520 @ 2.27GHz
Max TDP95W80W
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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.