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Intel Atom N450 vs Pentium III 1400

The Intel Atom N450 @ 1.66GHz is newer than Intel Pentium III 1400 @ 1400MHz and is around 5% faster in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Also, Intel Atom N450 @ 1.66GHz uses substantially less power. The CPUs selected in this comparison belong in different CPU Classes: Laptop, Desktop. Consider, selecting CPUs from simliar CPU Class for more apt comparison. The values below were tabulated from a combined 194 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 N450 @ 1.66GHz×Intel Pentium III 1400 @ 1400MHz+ ADD
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Socket TypeBGA559Socket 370
CPU ClassLaptopDesktop
Clockspeed1.7 GHz1.4 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores1 (Threads: 2)1 (Threads: 1)
CacheL3: 0MBL1: 2KB, L2: 0.0MB, L3: 0MB
TDP5.5W31.2W
Yearly Running Cost$0.91$5.66
Other
First Seen on ChartQ1 2010Q3 2009
# of Samples1904
CPU Value0.00.0
Single Thread Rating(% diff. to max in group)2773(0.0%)2723(-1.8%)
CPU Mark(% diff. to max in group)203(0.0%)193(-4.9%)
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 25th of April 2025 - Higher results represent better performance
Intel Atom N450 @ 1.66GHz
203
Intel Pentium III 1400 @ 1400MHz
193
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 25th of April 2025 - Higher results represent better performance
Intel Atom N450 @ 1.66GHz
277
Intel Pentium III 1400 @ 1400MHz
272
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.
Intel Atom N450 @ 1.66GHz Intel Pentium III 1400 @ 1400MHz
Max TDP5.5W31.2W
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.