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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Athlon II X4 645 vs AMD FX-4100 Quad-Core

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

×AMD Athlon II X4 645×AMD FX-4100 Quad-Core+ ADD
Price$28.85
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$26.3
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Socket TypeAM3AM3+
CPU ClassDesktopDesktop
Clockspeed3.1 GHz3.6 GHz
Turbo SpeedNot SupportedUp to 3.8 GHz
# of Physical Cores4 (Threads: 4)4 (in 2 physical modules)
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ4 2010Q4 2011
# of Samples5682246
Cross-Platform Rating46765847
Single Thread Rating12561282
CPU Mark22232544

CPU Mark Rating
As of 20th of October 2021 - Higher results represent better performance
AMD Athlon II X4 645
2,223
AMD FX-4100 Quad-Core
2,544
CPU Value (CPU Mark / $Price)
As of 20th of October 2021 - Higher results represent better value
AMD Athlon II X4 645
77.05
AMD FX-4100 Quad-Core
96.73
CPU Single Thread Rating
As of 20th of October 2021 - Higher results represent better performance
AMD Athlon II X4 645
1,256
AMD FX-4100 Quad-Core
1,282

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 645AMD FX-4100 Quad-Core
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.