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CPU Benchmarks

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Intel Core2 Quad Q8400 vs AMD FX-4100 Quad-

The AMD FX-4100 Quad-Core is newer than Intel Core2 Quad Q8400 @ 2.66GHz and is around 27% faster in multi-threaded (CPU Mark) testing. The AMD FX-4100 Quad-Core 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 4065 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 Q8400 @ 2.66GHz×AMD FX-4100 Quad-Core+ ADD
Price Search Online Search Online
Socket TypeLGA775AM3+
CPU ClassDesktopDesktop
Clockspeed2.7 GHz3.6 GHz
Turbo SpeedNot SupportedUp to 3.8 GHz
# of Physical Cores4 (Threads: 4)4 (in 2 physical modules)
CacheL1: 256KB, L2: 4.0MB, L3: 0MBL1: 320KB, L2: 8.0MB, L3: 8MB
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ2 2009Q4 2011
# of Samples16532412
CPU Value16.0137.8
Single Thread Rating(% diff. to max in group)1141(-11.3%)1287(0.0%)
CPU Mark(% diff. to max in group)2068(-21.0%)2617(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 22nd of April 2025 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
2,068
AMD FX-4100 Quad-Core
2,617
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 22nd of April 2025 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz
16.0
AMD FX-4100 Quad-Core
137.8
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 22nd of April 2025 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz
1,141
AMD FX-4100 Quad-Core
1,287
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 Q8400 @ 2.66GHz AMD FX-4100 Quad-Core
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.