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AMD FX-4100 Quad- vs Athlon II X4 645

The AMD FX-4100 Quad-Core is newer than AMD Athlon II X4 645 also around 10% faster in multi-threaded (CPU Mark) testing but the CPUs have comparable single-thread rating. 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 3012 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 FX-4100 Quad-Core×AMD Athlon II X4 645+ ADD
Price Search Online $59.99 - BUY
Socket TypeAM3+AM3
CPU ClassDesktopDesktop
Clockspeed3.6 GHz3.1 GHz
Turbo SpeedUp to 3.8 GHzNot Supported
# of Physical Cores4 (in 2 physical modules)4 (Threads: 4)
CacheL1: 320KB, L2: 8.0MB, L3: 8MBL1: 512KB, L2: 2.0MB,
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ4 2011Q4 2010
# of Samples2399613
CPU Value137.839.1
Single Thread Rating(% diff. to max in group)1289(0.0%)1256(-2.5%)
CPU Mark(% diff. to max in group)2618(0.0%)2348(-10.3%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 15th of January 2025 - Higher results represent better performance
AMD FX-4100 Quad-Core
2,618
AMD Athlon II X4 645
2,348
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 15th of January 2025 - Higher results represent better value
AMD FX-4100 Quad-Core
137.8
AMD Athlon II X4 645
39.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 15th of January 2025 - Higher results represent better performance
AMD FX-4100 Quad-Core
1,289
AMD Athlon II X4 645
1,256
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 FX-4100 Quad-Core AMD Athlon II X4 645
Max TDP95W95W
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.