Quote Originally Posted by MpG View Post
Not quite sure what you mean by this - are you saying you originally had a PCI-E 8-pin power plug in the motherboard? They're supposed to be keyed differently, because they're definitely not electrically compatible. If so, you might have borked something.
I'm saying that when I got the new PSU, their manual stated that there was two choices for the additional 8pin plug on the mobo. One connector which was a 2x4pin (from the PSU) used for singlecore and dualcore and one connector which was a "true" 8pin connector used for "the latest quad cores".

I chose the latter and when I first saw the unstability I decided to doublecheck the psu manual and the mobo manual.

The mobo manual stated that I should use the 2x4pin with 4xGND and 4x12V

The PSU manual stated that the 2x4pin was 4xGND and 4x12, but the "true" 8pin (that I used initially) was 4xCOM and 4x12V.

So, I changed back to the 2x4pin and tried again - but with the same results.

I've now talked to one of my colleagues and he says that the COM is the same as GND, so I shouldn't have fried anything.

Is this correct?