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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 Core2 Quad Q8400 @ 2.66GHz×Intel Core i3-540 @ 3.07GHz+ ADD
Price$239.951$189.95 BUY NOW!
Socket TypeLGA775LGA1156
CPU ClassDesktopDesktop
Clockspeed2.7 GHz3.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores42 (2 logical cores per physical)
Max TDP95W73W
Yearly Running Cost$17.34$13.32
First Seen on ChartQ2 2009Q1 2010
# of Samples13731278
Single Thread Rating11201223
CPU Mark31622684

CPU Mark Rating
As of 12th of December 2019 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
3,162
Intel Core i3-540 @ 3.07GHz
2,684
CPU Value (CPU Mark / $Price)
As of 12th of December 2019 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz
13.18
Intel Core i3-540 @ 3.07GHz
14.13
CPU Single Thread Rating
As of 12th of December 2019 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
1,120
Intel Core i3-540 @ 3.07GHz
1,223

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 Core2 Quad Q8400 @ 2.66GHzIntel Core i3-540 @ 3.07GHz
Max TDP95W73W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.