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Intel Atom N450 vs AMD Sempron SI-42

The Intel Atom N450 @ 1.66GHz is newer than AMD Sempron SI-42, while AMD Sempron SI-42 is around 17% faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. However, Intel Atom N450 @ 1.66GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 316 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×AMD Sempron SI-42+ ADD
Price Search Online Search Online
Socket TypeBGA559S1
CPU ClassLaptopLaptop
Clockspeed1.7 GHz2.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores1 (Threads: 2)1 (Threads: 1)
CacheL3: 0MBL1: 128KB, L2: 0.5MB,
TDP5.5W25W
Yearly Running Cost$0.91$4.56
Other
First Seen on ChartQ1 2010Q1 2009
# of Samples190126
CPU Value0.08.2
Single Thread Rating(% diff. to max in group)2773(-56.6%)6373(0.0%)
CPU Mark(% diff. to max in group)203(-16.9%)245(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 22nd of November 2024 - Higher results represent better performance
Intel Atom N450 @ 1.66GHz
203
AMD Sempron SI-42
245
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 22nd of November 2024 - Higher results represent better value
Intel Atom N450 @ 1.66GHz
NA
AMD Sempron SI-42
8.2
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 22nd of November 2024 - Higher results represent better performance
Intel Atom N450 @ 1.66GHz
277
AMD Sempron SI-42
637
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 N450 @ 1.66GHz AMD Sempron SI-42
Max TDP5.5W25W
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.