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CPU Benchmarks

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AMD Phenom II N640 Dual- vs Phenom II P920 Quad-

The AMD Phenom II N640 Dual-Core is newer than AMD Phenom II P920 Quad-Core also around 11% faster in multi-threaded (CPU Mark) testing, it is around 47% faster in single-thread testing. However, AMD Phenom II N640 Dual-Core uses around 33% more power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 107 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 Phenom II N640 Dual-Core×AMD Phenom II P920 Quad-Core+ ADD
Price Search Online Search Online
Socket TypeS1S1
CPU ClassLaptopLaptop
Clockspeed2.9 GHz1.6 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)4 (Threads: 4)
CacheL1: 256KB, L2: 2.0MB, L1: 512KB, L2: 2.0MB,
TDP35W25W
Yearly Running Cost$6.39$4.56
Other
First Seen on ChartQ4 2010Q3 2010
# of Samples5849
CPU Value20.715.5
Single Thread Rating(% diff. to max in group)1121(0.0%)597(-46.8%)
CPU Mark(% diff. to max in group)1135(0.0%)1006(-11.4%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 8th of April 2025 - Higher results represent better performance
AMD Phenom II N640 Dual-Core
1,135
AMD Phenom II P920 Quad-Core
1,006
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 8th of April 2025 - Higher results represent better value
AMD Phenom II N640 Dual-Core
20.7
AMD Phenom II P920 Quad-Core
15.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 8th of April 2025 - Higher results represent better performance
AMD Phenom II N640 Dual-Core
1,121
AMD Phenom II P920 Quad-Core
597
PassMark Software © 2008-2025
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 Phenom II N640 Dual-Core AMD Phenom II P920 Quad-Core
Max TDP35W25W
Power consumption per day (kWh)0.070.05
Running cost per day$0.018$0.013
Power consumption per year (kWh)25.618.3
Running cost per year$6.39$4.56
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.