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AMD Phenom II X3 B77 vs Intel Core2 Quad Q9400

The AMD Phenom II X3 B77 is newer than Intel Core2 Quad Q9400 @ 2.66GHz and is around -14% slower in multi-threaded (CPU Mark) testing. The AMD Phenom II X3 B77 is around 15% 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 2516 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 X3 B77×Intel Core2 Quad Q9400 @ 2.66GHz+ ADD
Price Search Online Search Online
Socket TypeAM2+/AM3LGA775
CPU ClassDesktopDesktop
Clockspeed3.2 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores3 (Threads: 3)4 (Threads: 4)
CacheL1: 384KB, L2: 1.5MB, L3: 6MBL1: 256KB, L2: 6.0MB, L3: 0MB
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ2 2012Q4 2008
# of Samples52511
CPU Value82.785.7
Single Thread Rating(% diff. to max in group)1310(0.0%)1138(-13.1%)
CPU Mark(% diff. to max in group)1844(-14.1%)2147(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 23rd of April 2025 - Higher results represent better performance
AMD Phenom II X3 B77
1,844
Intel Core2 Quad Q9400 @ 2.66GHz
2,147
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 23rd of April 2025 - Higher results represent better value
AMD Phenom II X3 B77
82.7
Intel Core2 Quad Q9400 @ 2.66GHz
85.7
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 23rd of April 2025 - Higher results represent better performance
AMD Phenom II X3 B77
1,310
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 X3 B77 Intel Core2 Quad Q9400 @ 2.66GHz
Max TDP95W95W
Power consumption per day (kWh)0.190.19
Running cost per day$0.048$0.048
Power consumption per year (kWh)69.369.3
Running cost per year$17.34$17.34
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.