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CPU Benchmarks

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Intel Core2 Duo E6400 vs Core2 Duo E6600

The Intel Core2 Duo E6400 @ 2.13GHz is newer than Intel Core2 Duo E6600 @ 2.40GHz, while Intel Core2 Duo E6600 @ 2.40GHz is around 18% faster in multi-threaded (CPU Mark) testing, it is around 13% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 2607 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 Duo E6400 @ 2.13GHz×Intel Core2 Duo E6600 @ 2.40GHz+ ADD
Price Search Online Search Online
Socket TypeLGA775PLGA775
CPU ClassDesktopDesktop
Clockspeed2.1 GHz2.4 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 2.0MB, L3: 0MBL1: 128KB, L2: 4.0MB, L3: 0MB
TDP65W65W
Yearly Running Cost$11.86$11.86
Other
First Seen on ChartQ1 2009Q4 2008
# of Samples10611546
CPU Value25.953.9
Single Thread Rating(% diff. to max in group)8213(-13.3%)9463(0.0%)
CPU Mark(% diff. to max in group)774(-17.7%)941(0.0%)
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 17th of April 2025 - Higher results represent better performance
Intel Core2 Duo E6400 @ 2.13GHz
774
Intel Core2 Duo E6600 @ 2.40GHz
941
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 17th of April 2025 - Higher results represent better value
Intel Core2 Duo E6400 @ 2.13GHz
25.9
Intel Core2 Duo E6600 @ 2.40GHz
53.9
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 17th of April 2025 - Higher results represent better performance
Intel Core2 Duo E6400 @ 2.13GHz
821
Intel Core2 Duo E6600 @ 2.40GHz
946
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 Duo E6400 @ 2.13GHz Intel Core2 Duo E6600 @ 2.40GHz
Max TDP65W65W
Power consumption per day (kWh)0.130.13
Running cost per day$0.033$0.033
Power consumption per year (kWh)47.547.5
Running cost per year$11.86$11.86
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.