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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Quad Q9400 @ 2.66GHz vs AMD Athlon II X4 645

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

×Intel Core2 Quad Q9400 @ 2.66GHz×AMD Athlon II X4 645+ ADD
Price$25.49 BUY NOW!$24.9 BUY NOW!
Socket TypeLGA775AM3
CPU ClassDesktopDesktop
Clockspeed2.7 GHz3.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores44
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ4 2008Q4 2010
# of Samples2131547
Cross-Platform Rating50033701
Single Thread Rating10611149
CPU Mark19722014

CPU Mark Rating
As of 5th of April 2020 - Higher results represent better performance
Intel Core2 Quad Q9400 @ 2.66GHz
1,972
AMD Athlon II X4 645
2,014
CPU Value (CPU Mark / $Price)
As of 5th of April 2020 - Higher results represent better value
Intel Core2 Quad Q9400 @ 2.66GHz
77.37
AMD Athlon II X4 645
80.88
CPU Single Thread Rating
As of 5th of April 2020 - Higher results represent better performance
Intel Core2 Quad Q9400 @ 2.66GHz
1,061
AMD Athlon II X4 645
1,149

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 Q9400 @ 2.66GHzAMD Athlon II X4 645
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.