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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

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

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

×AMD Athlon II X4 645×Intel Core2 Quad Q9400 @ 2.66GHz+ ADD
Price$16.48
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$38.011
Socket TypeAM3LGA775
CPU ClassDesktopDesktop
Clockspeed3.1 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ4 2010Q4 2008
# of Samples5842321
Single Thread Rating12661141
CPU Mark23122070
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 22nd of May 2022 - Higher results represent better performance
AMD Athlon II X4 645
2,312
Intel Core2 Quad Q9400 @ 2.66GHz
2,070
CPU Value (CPU Mark / $Price)
As of 22nd of May 2022 - Higher results represent better value
AMD Athlon II X4 645
140.27
Intel Core2 Quad Q9400 @ 2.66GHz
54.47
CPU Single Thread Rating
As of 22nd of May 2022 - Higher results represent better performance
AMD Athlon II X4 645
1,266
Intel Core2 Quad Q9400 @ 2.66GHz
1,141

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 Athlon II X4 645Intel Core2 Quad Q9400 @ 2.66GHz
Max TDP95W95W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.