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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.

AMD Phenom II X4 B55Intel Core2 Quad Q8400 @ 2.66GHz
PriceSearch Online$239.951
Socket TypeAM2+/AM3LGA775
CPU ClassDesktopDesktop
Clockspeed3.3 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores44
Max TDPNA295W
Yearly Running CostNA$17.34
First Seen on ChartQ1 2010Q2 2009
# of Samples5051334
Single Thread Rating11111120
CPU Mark38553161
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.


CPU Mark Rating
As of 20th of July 2019 - Higher results represent better performance
AMD Phenom II X4 B55
3,855
Intel Core2 Quad Q8400 @ 2.66GHz
3,161
Intel Core i9-9900K @ 3.60GHz
20,221
AMD Ryzen 7 2700X
16,972
Intel Core i7-8700K @ 3.70GHz
15,960
Intel Core i7-8700 @ 3.20GHz
15,160
AMD Ryzen 7 1700X
14,680
PassMark Software © 2008-2019

CPU Value (CPU Mark / $Price)
As of 20th of July 2019 - Higher results represent better value
AMD Phenom II X4 B55
NA
Intel Core2 Quad Q8400 @ 2.66GHz
13.18
Intel Core i9-9900K @ 3.60GHz
41.69
AMD Ryzen 7 2700X
67.65
Intel Core i7-8700K @ 3.70GHz
45.60
Intel Core i7-8700 @ 3.20GHz
50.54
AMD Ryzen 7 1700X
89.52
PassMark Software © 2008-2019

CPU Single Thread Rating
As of 20th of July 2019 - Higher results represent better performance
AMD Phenom II X4 B55
1,111
Intel Core2 Quad Q8400 @ 2.66GHz
1,120
Intel Core i9-9900K @ 3.60GHz
2,898
AMD Ryzen 7 2700X
2,192
Intel Core i7-8700K @ 3.70GHz
2,701
Intel Core i7-8700 @ 3.20GHz
2,630
AMD Ryzen 7 1700X
1,881
PassMark Software © 2008-2019





Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day
Average CPU Utilization (0-100%)1
Power 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.
AMD Phenom II X4 B55Intel Core2 Quad Q8400 @ 2.66GHz
Max TDPNA95W
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.


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