The AMD Athlon II X4 635 is the top chip in the Athlon II X45 range and clocks in at 2.9GHz. The Athlon II X4 635 costs quite a bit more than its triple and dual core brethren. The biggest problem is that it is only R200 shy of the Phenom II X4 925 which makes it very difficult to substantiate purchasing this processor over saving a little more for something a bit more powerful. However, that being said this processor still manages to deliver a reasonable performance considering its humble roots. The Athlon II X4 635 manages to deliver a Cinebench score of 88 seconds and a Super Pi score of 27.371s. These results show that the Athlon II architecture improves steadily the more cores the processor has.
The problem with the X4 635 is that despite a decent performance lead over the other Athlon chips, the price increase is too steep to make it the must-have processor out of these four. The X3 440, once overclocked, manages to pose a serious problem for the X4 635 especially as the X3 is R400 cheaper. The performance lead of the X4 635 jumps significantly when overclocked to 3.5GHz but whether that is reason enough to buy this chip over the X3 will be up to the person paying for it.
The Athlon II X4 635 does a decent job at producing some pleasing results but the fact that it is only R200 cheaper than a full-fledged Phenom II X4 makes purchasing one sheer lunacy. The Phenom II X4 925 is only 100MHz slower but as with all the Phenom II processors it will overclock easily. The Athlon II X4 635 just does not make sense when placed next to a far more capable processor.
Configuration quad core, single-die
Manufacturing process 45nm SOI
Clock speed(s) 2.9GHz
Cache Memory 2MB L2