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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 B65 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 B65×AMD Phenom II X4 840+ ADD
PriceSearch Online$24.78
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Socket TypeAM2+/AM3AM2+/AM3
CPU ClassDesktopDesktop
Clockspeed3.4 GHz3.2 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDPNA295W
Yearly Running CostNA$17.34
First Seen on ChartQ1 2011Q1 2011
# of Samples18693
Cross-Platform Rating05089
Single Thread Rating13571306
CPU Mark25762354

CPU Mark Rating
As of 23rd of October 2021 - Higher results represent better performance
AMD Phenom II X4 B65
 2,576
AMD Phenom II X4 840
 2,354
PassMark Software © 2008-2021
CPU Value (CPU Mark / $Price)
As of 23rd of October 2021 - Higher results represent better value
AMD Phenom II X4 B65
 NA
AMD Phenom II X4 840
 94.99
PassMark Software © 2008-2021
CPU Single Thread Rating
As of 23rd of October 2021 - Higher results represent better performance
AMD Phenom II X4 B65
 1,357
AMD Phenom II X4 840
 1,306
PassMark Software © 2008-2021

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 B65AMD Phenom II X4 840
Max TDPNA95W
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.