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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Athlon II X4 640 vs AMD Athlon II X3 445

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

×AMD Athlon II X4 640×AMD Athlon II X3 445+ ADD
Price$14.95
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$15.21
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Socket TypeAM3AM3
CPU ClassDesktopDesktop
Clockspeed3.0 GHz3.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)3 (Threads: 3)
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ2 2010Q3 2010
# of Samples1712311
Single Thread Rating12041278
CPU Mark21801804

CPU Mark Rating
As of 27th of June 2022 - Higher results represent better performance
AMD Athlon II X4 640
2,180
AMD Athlon II X3 445
1,804
CPU Value (CPU Mark / $Price)
As of 27th of June 2022 - Higher results represent better value
AMD Athlon II X4 640
145.79
AMD Athlon II X3 445
118.61
CPU Single Thread Rating
As of 27th of June 2022 - Higher results represent better performance
AMD Athlon II X4 640
1,204
AMD Athlon II X3 445
1,278

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 640AMD Athlon II X3 445
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.