In an effort to make the CPU part of the decision a bit easier, AMD offers a broad selection of CPUs, most in the sub-$200 range. Clocking in at $119 MSRP, the Athlon II X4 645 promises an improvement on the already solid performance of the X4 640, at a price just over half of Intel's nearest equivalent, the i5 750. Stick with us while we put this pony through its paces.