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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Quad Q9400 vs Xeon E5450 vs Core2 Quad Q9650

The CPUs selected in this comparison belong in different CPU Classes: Desktop, Server. Consider, selecting CPUs from simliar CPU Class for more apt comparison. The values below were tabulated from a combined 5683 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 Q9400 @ 2.66GHz×Intel Xeon E5450 @ 3.00GHz×Intel Core2 Quad Q9650 @ 3.00GHz+ ADD
Price Search Online Search Online Search Online
Socket TypeLGA775LGA771LGA775
CPU ClassDesktopServerDesktop
Clockspeed2.7 GHz3.0 GHz3.0 GHz
Turbo SpeedNot SupportedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)4 (Threads: 4)
CacheL1: 256KB, L2: 6.0MB, L3: 0MBL1: 256KB, L2: 12.0MB, L3: 0MBL1: 256KB, L2: 12.0MB, L3: 0MB
TDP95W80W95W
Yearly Running Cost$17.34$14.60$17.34
Other
First Seen on ChartQ4 2008Q2 2009Q4 2008
# of Samples253213281823
CPU Value86.069.513.1
Single Thread Rating(% diff. to max in group)1139(-11.2%)1283(0.0%)1283(0.0%)
CPU Mark(% diff. to max in group)2155(-16.2%)2571(0.0%)2495(-2.9%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 17th of July 2025 - Higher results represent better performance
Intel Core2 Quad Q9400 @ 2.66GHz
2,155
Intel Xeon E5450 @ 3.00GHz
2,571
Intel Core2 Quad Q9650 @ 3.00GHz
2,495
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 17th of July 2025 - Higher results represent better value
Intel Core2 Quad Q9400 @ 2.66GHz
86.0
Intel Xeon E5450 @ 3.00GHz
69.5
Intel Core2 Quad Q9650 @ 3.00GHz
13.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 17th of July 2025 - Higher results represent better performance
Intel Core2 Quad Q9400 @ 2.66GHz
1,139
Intel Xeon E5450 @ 3.00GHz
1,283
Intel Core2 Quad Q9650 @ 3.00GHz
1,283
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 Q9400 @ 2.66GHz Intel Xeon E5450 @ 3.00GHz Intel Core2 Quad Q9650 @ 3.00GHz
Max TDP95W80W95W
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.