Hi, im a long time lurker, but a first time poster. I currently have a custom built computer, running a GODDAM A4-5300 on a MSI fm2 a75ma e35(Motherboard allows overclocking) with 8 gb of ddr3 1333 mhz and a crappy 300 stable, 480 peak psu that came with the case. (YES i know it is the worst possible build possible for gaming) I want to turn it into something decent (due to non budgetary constraints i cannot build a new system) I have been looking at upgrading to a x4 760k, and a GTX 760 , with a 500 watt psu, Any alternative idea, im looking for both the best i can do under $400 , and the best I can upgrade this system to without a bottleneck