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CPU Benchmarks

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AMD Athlon II X4 640 vs Phenom II X4 955

The AMD Athlon II X4 640 is newer than AMD Phenom II X4 955, while AMD Phenom II X4 955 is around 11% faster in multi-threaded (CPU Mark) testing, it is around 6% faster in single-thread testing. However, AMD Phenom II X4 955 uses around 27% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 5815 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×AMD Athlon II X4 640×AMD Phenom II X4 955+ ADD
Price $11.99 - BUY $59.01 - BUY
Socket TypeAM3AM3
CPU ClassDesktopDesktop
Clockspeed3.0 GHz3.2 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 512KB, L2: 2.0MB, L3: 6MBL1: 512KB, L2: 2.0MB, L3: 6MB
TDP95W125W
Yearly Running Cost$17.34$22.81
Other
First Seen on ChartQ2 2010Q1 2009
# of Samples17934022
CPU Value187.242.7
Single Thread Rating(% diff. to max in group)1212(-6.4%)1295(0.0%)
CPU Mark(% diff. to max in group)2245(-10.8%)2518(0.0%)

CPU Mark Rating
As of 25th of November 2024 - Higher results represent better performance
AMD Athlon II X4 640
2,245
AMD Phenom II X4 955
2,518
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 25th of November 2024 - Higher results represent better value
AMD Athlon II X4 640
187.2
AMD Phenom II X4 955
42.7
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 25th of November 2024 - Higher results represent better performance
AMD Athlon II X4 640
1,212
AMD Phenom II X4 955
1,295
PassMark Software © 2008-2024
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
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 Athlon II X4 640 AMD Phenom II X4 955
Max TDP95W125W
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.