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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Quad Q8400 vs Core2 Quad Q9500 vs Core2 Duo E6600

All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 3524 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Core2 Quad Q8400 @ 2.66GHz×Intel Core2 Quad Q9500 @ 2.83GHz×Intel Core2 Duo E6600 @ 2.40GHz+ ADD
Price Search Online Search Online Search Online
Socket TypeLGA775LGA775PLGA775
CPU ClassDesktopDesktopDesktop
Clockspeed2.7 GHz2.8 GHz2.4 GHz
Turbo SpeedNot SupportedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)2 (Threads: 2)
CacheL1: 256KB, L2: 4.0MB, L3: 0MBL1: 256KB, L2: 6.0MB, L3: 0MBL1: 128KB, L2: 4.0MB, L3: 0MB
TDP95W95W65W
Yearly Running Cost$17.34$17.34$11.86
Other
First Seen on ChartQ2 2009Q2 2010Q4 2008
# of Samples16533241547
CPU Value16.045.754.0
Single Thread Rating(% diff. to max in group)1141(-5.9%)1213(0.0%)9473(-22.0%)
CPU Mark(% diff. to max in group)2068(-7.7%)2240(0.0%)942(-57.9%)
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 25th of April 2025 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
2,068
Intel Core2 Quad Q9500 @ 2.83GHz
2,240
Intel Core2 Duo E6600 @ 2.40GHz
942
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 25th of April 2025 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz
16.0
Intel Core2 Quad Q9500 @ 2.83GHz
45.7
Intel Core2 Duo E6600 @ 2.40GHz
54.0
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 25th of April 2025 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
1,141
Intel Core2 Quad Q9500 @ 2.83GHz
1,213
Intel Core2 Duo E6600 @ 2.40GHz
947
PassMark Software © 2008-2025
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
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 @ 2.66GHz Intel Core2 Quad Q9500 @ 2.83GHz Intel Core2 Duo E6600 @ 2.40GHz
Max TDP95W95W65W
Power consumption per day (kWh)NANANA
Running cost per dayNANANA
Power consumption per year (kWh)NANANA
Running cost per yearNANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.