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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Athlon II X4 645 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 645×AMD A8-3870K APU+ ADD
Price$69.95
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$54.951
Socket TypeAM3FM1
CPU ClassDesktopDesktop
Clockspeed3.1 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDP95W100W
Yearly Running Cost$17.34$18.25
First Seen on ChartQ4 2010Q4 2011
# of Samples551561
Cross-Platform Rating43635234
Single Thread Rating12261241
CPU Mark21292345
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 3rd of August 2020 - Higher results represent better performance
AMD Athlon II X4 645
2,129
AMD A8-3870K APU
2,345
CPU Value (CPU Mark / $Price)
As of 3rd of August 2020 - Higher results represent better value
AMD Athlon II X4 645
30.43
AMD A8-3870K APU
42.68
CPU Single Thread Rating
As of 3rd of August 2020 - Higher results represent better performance
AMD Athlon II X4 645
1,226
AMD A8-3870K APU
1,241

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 A8-3870K APU
Max TDP95W100W
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.