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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 B55 vs AMD Athlon II X4 640

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

×AMD Phenom II X4 B55×AMD Athlon II X4 640+ ADD
PriceSearch Online$18.8
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Socket TypeAM2+/AM3AM3
CPU ClassDesktopDesktop
Clockspeed3.3 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDPNA295W
Yearly Running CostNA$17.34
First Seen on ChartQ1 2010Q2 2010
# of Samples5381707
Single Thread Rating13191203
CPU Mark24652171

CPU Mark Rating
As of 19th of May 2022 - Higher results represent better performance
AMD Phenom II X4 B55
2,465
AMD Athlon II X4 640
2,171
CPU Value (CPU Mark / $Price)
As of 19th of May 2022 - Higher results represent better value
AMD Phenom II X4 B55
NA
AMD Athlon II X4 640
115.47
CPU Single Thread Rating
As of 19th of May 2022 - Higher results represent better performance
AMD Phenom II X4 B55
1,319
AMD Athlon II X4 640
1,203

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 II X4 B55AMD Athlon II X4 640
Max TDPNA95W
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.