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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 920 vs AMD Athlon II X4 645

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

×AMD Phenom II X4 920×AMD Athlon II X4 645+ ADD
Price$27.891$28.85
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Socket TypeAM2+AM3
CPU ClassDesktopDesktop
Clockspeed2.8 GHz3.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDP125W95W
Yearly Running Cost$22.81$17.34
First Seen on ChartQ1 2009Q4 2010
# of Samples187568
Cross-Platform Rating44714676
Single Thread Rating10481256
CPU Mark19452223
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 16th of October 2021 - Higher results represent better performance
AMD Phenom II X4 920
1,945
AMD Athlon II X4 645
2,223
CPU Value (CPU Mark / $Price)
As of 16th of October 2021 - Higher results represent better value
AMD Phenom II X4 920
69.73
AMD Athlon II X4 645
77.05
CPU Single Thread Rating
As of 16th of October 2021 - Higher results represent better performance
AMD Phenom II X4 920
1,048
AMD Athlon II X4 645
1,256

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 920AMD Athlon II X4 645
Max TDP125W95W
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.