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AMD Phenom II X4 900e vs Intel Core2 Quad Q9400

The AMD Phenom II X4 900e is newer than Intel Core2 Quad Q9400 @ 2.66GHz, while Intel Core2 Quad Q9400 @ 2.66GHz is around 20% faster in multi-threaded (CPU Mark) testing, it is around 15% faster in single-thread testing. However, Intel Core2 Quad Q9400 @ 2.66GHz uses around 38% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 2523 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.

×AMD Phenom II X4 900e×Intel Core2 Quad Q9400 @ 2.66GHz+ ADD
Price Search Online Search Online
Socket TypeAM3LGA775
CPU ClassDesktopDesktop
Clockspeed2.4 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 512KB, L2: 2.0MB, L3: 6MBL1: 256KB, L2: 6.0MB, L3: 0MB
TDP65W95W
Yearly Running Cost$11.86$17.34
Other
First Seen on ChartQ4 2010Q4 2008
# of Samples122511
CPU Value0.085.7
Single Thread Rating(% diff. to max in group)966(-15.2%)1138(0.0%)
CPU Mark(% diff. to max in group)1727(-19.6%)2147(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 8th of April 2025 - Higher results represent better performance
AMD Phenom II X4 900e
1,727
Intel Core2 Quad Q9400 @ 2.66GHz
2,147
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 8th of April 2025 - Higher results represent better value
AMD Phenom II X4 900e
NA
Intel Core2 Quad Q9400 @ 2.66GHz
85.7
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 8th of April 2025 - Higher results represent better performance
AMD Phenom II X4 900e
966
Intel Core2 Quad Q9400 @ 2.66GHz
1,138
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.
AMD Phenom II X4 900e Intel Core2 Quad Q9400 @ 2.66GHz
Max TDP65W95W
Power consumption per day (kWh)0.130.19
Running cost per day$0.033$0.048
Power consumption per year (kWh)47.569.3
Running cost per year$11.86$17.34
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.