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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X2 B55 vs AMD Phenom II X2 555

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


×AMD Phenom II X2 B55×AMD Phenom II X2 555+ ADD
Price$37.951$13.18
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Socket TypeAM3AM2+/AM3
CPU ClassDesktopDesktop
Clockspeed3.0 GHz3.2 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
Max TDP80W80W
Yearly Running Cost$14.60$14.60
First Seen on ChartQ4 2009Q1 2010
# of Samples62456
Single Thread Rating(% diff. to max in group)12443(-5.4%)13153(0.0%)
CPU Mark(% diff. to max in group)1151(-12.0%)1308(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 30th of June 2022 - Higher results represent better performance
AMD Phenom II X2 B55
 1,151
AMD Phenom II X2 555
 1,308
PassMark Software © 2008-2022
CPU Value (CPU Mark / $Price)
As of 30th of June 2022 - Higher results represent better value
AMD Phenom II X2 B55
 30.34
AMD Phenom II X2 555
 99.27
PassMark Software © 2008-2022
CPU Single Thread Rating
As of 30th of June 2022 - Higher results represent better performance
AMD Phenom II X2 B55
 1,244
AMD Phenom II X2 555
 1,315
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 X2 B55AMD Phenom II X2 555
Max TDP80W80W
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.