I have one of these and its an absolute beast. Get it with some arctic silver 5 and you will have very low temps. It keeps the processor very cool even when it's in silent mode and by silent mode they mean SILENT, I can't even hear the thing outside the case. But if you want really good cooling it has an adjustment knob so you can crank up the fan for some serious cooling.
I would go by their suggestion to see if it will fit:
* Note: No motherboard components with a height greater than 39mm (1.53inch), as well as the PSU, disk drives, VGA card, and RAM should be present within a 68mm (2.68 inch) radius from the center of the CPU.