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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

CPU Performance Comparison

Performance of selected CPUs can be found below. The values for the CPU are determined from thousands of PerformanceTest benchmark results and is updated daily.


×Intel Pentium III Mobile 866MHz×AMD Sempron SI-42+ ADD
PriceSearch Online$30.011
Socket TypeNA2S1
CPU ClassLaptopLaptop
Clockspeed0.9 GHz2.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores11
Max TDPNA225W
Yearly Running CostNA$4.56
First Seen on ChartQ2 2009Q1 2009
# of Samples2119
Single Thread Rating20335313
CPU Mark152456

CPU Mark Rating
As of 20th of November 2019 - Higher results represent better performance
Intel Pentium III Mobile 866MHz
 152
AMD Sempron SI-42
 456
PassMark Software © 2008-2019
CPU Value (CPU Mark / $Price)
As of 20th of November 2019 - Higher results represent better value
Intel Pentium III Mobile 866MHz
 NA
AMD Sempron SI-42
 15.22
PassMark Software © 2008-2019
CPU Single Thread Rating
As of 20th of November 2019 - Higher results represent better performance
Intel Pentium III Mobile 866MHz
 203
AMD Sempron SI-42
 531
PassMark Software © 2008-2019

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 Pentium III Mobile 866MHzAMD Sempron SI-42
Max TDPNA25W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.