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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Athlon II X4 645 vs Athlon II X4 640

The AMD Athlon II X4 645 is newer than AMD Athlon II X4 640 and has comparable multi-threaded (CPU Mark) and 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 2403 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 Athlon II X4 645×AMD Athlon II X4 640+ ADD
Price $64.04 - BUY $11.99 - BUY
Socket TypeAM3AM3
CPU ClassDesktopDesktop
Clockspeed3.1 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 512KB, L2: 2.0MB, L1: 512KB, L2: 2.0MB, L3: 6MB
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ4 2010Q2 2010
# of Samples6101793
CPU Value36.7187.2
Single Thread Rating(% diff. to max in group)1256(0.0%)1212(-3.5%)
CPU Mark(% diff. to max in group)2348(0.0%)2245(-4.4%)

CPU Mark Rating
As of 1st of November 2024 - Higher results represent better performance
AMD Athlon II X4 645
2,348
AMD Athlon II X4 640
2,245
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 1st of November 2024 - Higher results represent better value
AMD Athlon II X4 645
36.7
AMD Athlon II X4 640
187.2
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 1st of November 2024 - Higher results represent better performance
AMD Athlon II X4 645
1,256
AMD Athlon II X4 640
1,212
PassMark Software © 2008-2024
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 Athlon II X4 645 AMD Athlon II X4 640
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.