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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Quad Q8400 @ 2.66GHz vs Intel Core2 Quad Q6600 @ 2.40GHz

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

×Intel Core2 Quad Q8400 @ 2.66GHz×Intel Core2 Quad Q6600 @ 2.40GHz+ ADD
Price$21.241$46.441
Socket TypeLGA775LGA775
CPU ClassDesktopDesktop
Clockspeed2.7 GHz2.4 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
Max TDP95W105W
Yearly Running Cost$17.34$19.16
First Seen on ChartQ2 2009Q4 2008
# of Samples14217025
Cross-Platform Rating48624607
Single Thread Rating1156971
CPU Mark20311778
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 28th of May 2020 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
2,031
Intel Core2 Quad Q6600 @ 2.40GHz
1,778
CPU Value (CPU Mark / $Price)
As of 28th of May 2020 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz
95.62
Intel Core2 Quad Q6600 @ 2.40GHz
38.28
CPU Single Thread Rating
As of 28th of May 2020 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
1,156
Intel Core2 Quad Q6600 @ 2.40GHz
971

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 Core2 Quad Q8400 @ 2.66GHzIntel Core2 Quad Q6600 @ 2.40GHz
Max TDP95W105W
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.