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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 920 vs AMD Phenom II X4 840

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


×AMD Phenom II X4 920×AMD Phenom II X4 840+ ADD
Price$27.891$23.84
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Socket TypeAM2+AM2+/AM3
CPU ClassDesktopDesktop
Clockspeed2.8 GHz3.2 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 2009Q1 2011
# of Samples189696
Single Thread Rating(% diff. to max in group)1087(-17.0%)1309(0.0%)
CPU Mark(% diff. to max in group)1981(-15.9%)2355(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 30th of June 2022 - Higher results represent better performance
AMD Phenom II X4 920
 1,981
AMD Phenom II X4 840
 2,355
PassMark Software © 2008-2022
CPU Value (CPU Mark / $Price)
As of 30th of June 2022 - Higher results represent better value
AMD Phenom II X4 920
 71.03
AMD Phenom II X4 840
 98.78
PassMark Software © 2008-2022
CPU Single Thread Rating
As of 30th of June 2022 - Higher results represent better performance
AMD Phenom II X4 920
 1,087
AMD Phenom II X4 840
 1,309
PassMark Software © 2008-2022

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 Phenom II X4 840
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.