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Intel Pentium Extreme Edition 955 vs Core2 Quad Q9400

The Intel Pentium Extreme Edition 955 @ 3.46GHz is newer than Intel Core2 Quad Q9400 @ 2.66GHz, while Intel Core2 Quad Q9400 @ 2.66GHz is significantly faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. However, Intel Pentium Extreme Edition 955 @ 3.46GHz uses around 31% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 2486 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 Pentium Extreme Edition 955 @ 3.46GHz×Intel Core2 Quad Q9400 @ 2.66GHz+ ADD
Price Search Online Search Online
Socket TypePLGA775LGA775
CPU ClassDesktopDesktop
Clockspeed3.5 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 4)4 (Threads: 4)
CacheL1: 17KB, L2: 2.0MB, L3: 0MBL1: 256KB, L2: 6.0MB, L3: 0MB
TDP130W95W
Yearly Running Cost$23.73$17.34
Other
First Seen on ChartQ2 2009Q4 2008
# of Samples152471
CPU Value15.085.2
Single Thread Rating(% diff. to max in group)5153(-54.7%)1138(0.0%)
CPU Mark(% diff. to max in group)469(-78.0%)2134(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 1st of December 2024 - Higher results represent better performance
Intel Pentium Extreme Edition 955 @ 3.46GHz
469
Intel Core2 Quad Q9400 @ 2.66GHz
2,134
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 1st of December 2024 - Higher results represent better value
Intel Pentium Extreme Edition 955 @ 3.46GHz
15.0
Intel Core2 Quad Q9400 @ 2.66GHz
85.2
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 1st of December 2024 - Higher results represent better performance
Intel Pentium Extreme Edition 955 @ 3.46GHz
515
Intel Core2 Quad Q9400 @ 2.66GHz
1,138
PassMark Software © 2008-2024
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 Pentium Extreme Edition 955 @ 3.46GHz Intel Core2 Quad Q9400 @ 2.66GHz
Max TDP130W95W
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.