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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 and is around 17% faster in multi-threaded (CPU Mark) testing. It is also significantly faster in single-thread testing. Also, 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 108 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 Samples5949
CPU Rank42934488
CPU Value21.515.5
Single Thread Rating(% diff. to max in group)1146(0.0%)597(-47.9%)
CPU Mark(% diff. to max in group)1181(0.0%)1006(-14.8%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 15th of March 2026 - Higher results represent better performance
AMD Phenom II N640 Dual-Core
1,181
AMD Phenom II P920 Quad-Core
1,006
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 15th of March 2026 - Higher results represent better value
AMD Phenom II N640 Dual-Core
21.5
AMD Phenom II P920 Quad-Core
15.5
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 15th of March 2026 - Higher results represent better performance
AMD Phenom II N640 Dual-Core
1,146
AMD Phenom II P920 Quad-Core
597
PassMark Software © 2008-2026
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)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.