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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 B55 vs Intel Core2 Quad Q8400 @ 2.66GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

×AMD Phenom II X4 B55×Intel Core2 Quad Q8400 @ 2.66GHz+ ADD
PriceSearch Online$229.951
Socket TypeAM2+/AM3LGA775
CPU ClassDesktopDesktop
Clockspeed3.3 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDPNA295W
Yearly Running CostNA$17.34
First Seen on ChartQ1 2010Q2 2009
# of Samples5271448
Cross-Platform Rating58614680
Single Thread Rating13381143
CPU Mark24051991
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 30th of October 2020 - Higher results represent better performance
AMD Phenom II X4 B55
2,405
Intel Core2 Quad Q8400 @ 2.66GHz
1,991
CPU Value (CPU Mark / $Price)
As of 30th of October 2020 - Higher results represent better value
AMD Phenom II X4 B55
NA
Intel Core2 Quad Q8400 @ 2.66GHz
8.66
CPU Single Thread Rating
As of 30th of October 2020 - Higher results represent better performance
AMD Phenom II X4 B55
1,338
Intel Core2 Quad Q8400 @ 2.66GHz
1,143

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.
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.