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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Athlon II X4 638 Quad-Core vs AMD A8-3870K APU

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

×AMD Athlon II X4 638 Quad-Core×AMD A8-3870K APU+ ADD
Price$62.851$68.04
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Socket TypeFM1FM1
CPU ClassDesktopDesktop
Clockspeed2.7 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDP65W100W
Yearly Running Cost$11.86$18.25
First Seen on ChartQ2 2015Q4 2011
# of Samples4578
Single Thread Rating(% diff. to max in group)1165(-6.0%)1239(0.0%)
CPU Mark(% diff. to max in group)2183(-6.5%)2335(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 2nd of July 2022 - Higher results represent better performance
AMD Athlon II X4 638 Quad-Core
2,183
AMD A8-3870K APU
2,335
CPU Value (CPU Mark / $Price)
As of 2nd of July 2022 - Higher results represent better value
AMD Athlon II X4 638 Quad-Core
34.73
AMD A8-3870K APU
34.31
CPU Single Thread Rating
As of 2nd of July 2022 - Higher results represent better performance
AMD Athlon II X4 638 Quad-Core
1,165
AMD A8-3870K APU
1,239

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 638 Quad-CoreAMD A8-3870K APU
Max TDP65W100W
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.