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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD A6-6400K APU vs AMD Athlon II X2 255

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

×AMD A6-6400K APU×AMD Athlon II X2 255+ ADD
Price$84.81 BUY NOW!$10.9 BUY NOW!
Socket TypeFM2AM3
CPU ClassDesktopDesktop
Clockspeed3.9 GHz3.1 GHz
Turbo SpeedUp to 4.1 GHzNot Supported
# of Physical Cores1 (2 logical cores per physical)2
Max TDP65W65W
Yearly Running Cost$11.86$11.86
First Seen on ChartQ2 2013Q1 2010
# of Samples532375
Single Thread Rating1546311553
CPU Mark13321080

CPU Mark Rating
As of 2nd of April 2020 - Higher results represent better performance
AMD A6-6400K APU
1,332
AMD Athlon II X2 255
1,080
CPU Value (CPU Mark / $Price)
As of 2nd of April 2020 - Higher results represent better value
AMD A6-6400K APU
15.71
AMD Athlon II X2 255
99.04
CPU Single Thread Rating
As of 2nd of April 2020 - Higher results represent better performance
AMD A6-6400K APU
1,546
AMD Athlon II X2 255
1,155

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 A6-6400K APUAMD Athlon II X2 255
Max TDP65W65W
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.