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Intel Atom N270 vs Core2 Duo P8400

The Intel Atom N270 @ 1.60GHz is newer than Intel Core2 Duo P8400 @ 2.26GHz, while Intel Core2 Duo P8400 @ 2.26GHz is significantly faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. However, Intel Atom N270 @ 1.60GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 1511 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.

×Intel Atom N270 @ 1.60GHz×Intel Core2 Duo P8400 @ 2.26GHz+ ADD
Price Search Online Search Online
Socket TypeBGA437BGA479
CPU ClassLaptopLaptop
Clockspeed1.6 GHz2.3 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores1 (Threads: 2)2 (Threads: 2)
CacheL3: 0MBL1: 128KB, L2: 3.0MB, L3: 0MB
TDP2.5W25W
Yearly Running Cost$0.37$4.56
Other
First Seen on ChartQ1 2009Q4 2008
# of Samples2391272
CPU Value0.02.9
Single Thread Rating(% diff. to max in group)1743(-81.1%)9203(0.0%)
CPU Mark(% diff. to max in group)136(-84.0%)849(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 1st of December 2024 - Higher results represent better performance
Intel Atom N270 @ 1.60GHz
136
Intel Core2 Duo P8400 @ 2.26GHz
849
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 1st of December 2024 - Higher results represent better value
Intel Atom N270 @ 1.60GHz
NA
Intel Core2 Duo P8400 @ 2.26GHz
2.9
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 1st of December 2024 - Higher results represent better performance
Intel Atom N270 @ 1.60GHz
174
Intel Core2 Duo P8400 @ 2.26GHz
920
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.
Intel Atom N270 @ 1.60GHz Intel Core2 Duo P8400 @ 2.26GHz
Max TDP2.5W25W
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.