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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.


×AMD Phenom 9550 Quad-Core×Intel Core2 Quad Q8400 @ 2.66GHz+ ADD
Price$28.991$239.951
Socket TypeAM2+LGA775
CPU ClassDesktopDesktop
Clockspeed2.2 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores44
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ4 2008Q2 2009
# of Samples4581372
Single Thread Rating7611120
CPU Mark25443162

CPU Mark Rating
As of 8th of December 2019 - Higher results represent better performance
AMD Phenom 9550 Quad-Core
 2,544
Intel Core2 Quad Q8400 @ 2.66GHz
 3,162
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 8th of December 2019 - Higher results represent better value
AMD Phenom 9550 Quad-Core
 87.77
Intel Core2 Quad Q8400 @ 2.66GHz
 13.18
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 8th of December 2019 - Higher results represent better performance
AMD Phenom 9550 Quad-Core
 761
Intel Core2 Quad Q8400 @ 2.66GHz
 1,120
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.
AMD Phenom 9550 Quad-CoreIntel Core2 Quad Q8400 @ 2.66GHz
Max TDP95W95W
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.