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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Quad Q8400 @ 2.66GHz vs Intel Pentium E5500 @ 2.80GHz

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 Pentium E5500 @ 2.80GHz+ ADD
Price$128.881$15.99
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Socket TypeLGA775LGA775
CPU ClassDesktopDesktop
Clockspeed2.7 GHz2.8 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)2 (Threads: 2)
Max TDP95W65W
Yearly Running Cost$17.34$11.86
First Seen on ChartQ2 2009Q2 2010
# of Samples1501570
Single Thread Rating115111483
CPU Mark20081014
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 5th of December 2021 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
2,008
Intel Pentium E5500 @ 2.80GHz
1,014
CPU Value (CPU Mark / $Price)
As of 5th of December 2021 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz
15.58
Intel Pentium E5500 @ 2.80GHz
63.40
CPU Single Thread Rating
As of 5th of December 2021 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
1,151
Intel Pentium E5500 @ 2.80GHz
1,148

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 Pentium E5500 @ 2.80GHz
Max TDP95W65W
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.