If you're building a starter desktop to get ready for school, you'll be glad to know that AMD is squeaking just a little more value for the dollar out of its processors. The new quad-core FX-4130 takes a 200MHz hop forward from its predecessor to a 3.8GHz base speed, and ramps up to 3.9GHz if it's feeling frisky. While it's thirstier than the earlier FX-4100 at 125W of maximum power draw, the unlocked chip's $112 retail cost is a potential sweet spot for those tailoring a system to a strict