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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 820 vs AMD FX-4100 Quad-Core

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

×AMD Phenom II X4 820×AMD FX-4100 Quad-Core+ ADD
Price$291$26.37
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Socket TypeAM3AM3+
CPU ClassDesktopDesktop
Clockspeed2.8 GHz3.6 GHz
Turbo SpeedNot SupportedUp to 3.8 GHz
# of Physical Cores4 (Threads: 4)4 (in 2 physical modules)
Max TDP95W95W
Yearly Running Cost$17.34$17.34
First Seen on ChartQ4 2009Q4 2011
# of Samples2172244
Cross-Platform Rating50855840
Single Thread Rating11371279
CPU Mark21082539
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 15th of October 2021 - Higher results represent better performance
AMD Phenom II X4 820
2,108
AMD FX-4100 Quad-Core
2,539
CPU Value (CPU Mark / $Price)
As of 15th of October 2021 - Higher results represent better value
AMD Phenom II X4 820
72.68
AMD FX-4100 Quad-Core
96.29
CPU Single Thread Rating
As of 15th of October 2021 - Higher results represent better performance
AMD Phenom II X4 820
1,137
AMD FX-4100 Quad-Core
1,279

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 820AMD FX-4100 Quad-Core
Max TDP95W95W
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.