I'm currently using the AMD-FX 9590 without overclocking it's 8 cores to 5.0 GHz so it stays at 4.7 GHz. This processor uses 220W and I'm using a 750W PSU, which I don't think where the problem is. My PC just locks up and freezes a lot. My current cpu cooler is the Corsair H90, and it doesn't seem to be doing such a great job so I need the best possible AM3+ socket cpu liquid cooler. My full specs can be found at http://pcpartpicker.com/user/Fuziion/saved/vJxWGX