Thanks guys looks like a good combination im using either kingston hyperx or my xms memory.
I have an i7-2600k on an MSI P67A-GD65 with a Noctua Nh-D14 cooler. Clears the motherboard just fine, only ram clearance to think about, I went for the xms for that reason.
The cpu is at 4.9ghz overclock and prime load temps of 72C/74C