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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD A8-6600K APU vs AMD Athlon X4 840

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

×AMD A8-6600K APU×AMD Athlon X4 840+ ADD
Price$991$98
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Socket TypeFM2FM2+
CPU ClassDesktopDesktop
Clockspeed3.9 GHz3.1 GHz
Turbo SpeedUp to 4.2 GHzUp to 3.8 GHz
# of Physical Cores4 (in 2 physical modules)4 (in 2 physical modules)
Max TDP100W65W
Yearly Running Cost$18.25$11.86
First Seen on ChartQ2 2013Q1 2015
# of Samples923206
Cross-Platform Rating63676625
Single Thread Rating15361477
CPU Mark29963264
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 28th of November 2020 - Higher results represent better performance
AMD A8-6600K APU
2,996
AMD Athlon X4 840
3,264
CPU Value (CPU Mark / $Price)
As of 28th of November 2020 - Higher results represent better value
AMD A8-6600K APU
30.26
AMD Athlon X4 840
33.31
CPU Single Thread Rating
As of 28th of November 2020 - Higher results represent better performance
AMD A8-6600K APU
1,536
AMD Athlon X4 840
1,477

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 A8-6600K APUAMD Athlon X4 840
Max TDP100W65W
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.