REVIEW / AMD Athlon II X4 645

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Régis Jehl Published on September 29, 2010
Translated by Jack Sims
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  • Socket AM3
  • Number of cores 4
  • Clock rate 3.1 GHz
  • Cache 2.0E-6 MB
  • Thermal Design Power 95 W
  • Technology 0 nm
Fourth representative of the Athlon II four core range, the Athlon II X4 645 adds 100 MHz to the clock in comparison to the 640. This quad-core, then, is clocked at 3.1 GHz, which is enough to see its performance level increase a little more than 1% on the 640.

This keeps it just a little above the Intel Core i3 540. This also has two cores but at a clock of 3.06 GHz.
General performance average
Click on the image to see all our readings
and compare this model with others

For a more detailed analysis of the Athlon II X4 600 quad-core series, please see our full review of the AMD Athlon II X4 630. Lastly, don't forget that our performance index table gives an overall view of performances for all the graphics cards we've reviewed.

Power Use
Performance: Applications
Performance: Games

View Performance Index Table


  • Low energy consumption
  • All-round processor at ease with most activities


  • Faster (but more expensive) CPUs are available for gaming
  • No Turbo mode


A quad-core CPU that offers performance levels at times lower than dual core models. It is nevertheless a good performer in applications that are adapted to the use of several cores.
3 AMD Athlon II X4 645 DigitalVersus 2010-09-29 00:00:00
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