ASRock Z68 Extreme 4: Mounting holes for LGA775 cooler means cooler is seated incorrectly.

wapcatlet · 24 Jun 2011 at 14:00

I need some advice please.

I just bought all of the components for a new build (from Overclockers obviously), including the ASRock Z68 Extreme 4, an i5 2500K and a Corsair A50 CPU cooler.

Firstly, I would point out that the specs of the A50 say that it is compatible with the 1155 socket but I can find nothing in the packaging or the instructions to support this claim. However, it IS compatible with LGA775 and seeing that the ASRock mobo has the mounting holes for an LGA775 as well as an 1155, I decided to mount the A50 using the LGA775 bracket.

BUT....

This causes the cooler to be slightly rotated by around 10 degrees so that it no longer sits square on the CPU. It sort-of points towards the corner of the mobo rather than the back.

It's fair to assume that the holes in the mobo are positioned correctly and therefore it must be intentional that an LGA775 cooler would be offset in this way. It just looks wrong.

Should I be worried?

stulid · 24 Jun 2011 at 14:33

The A50 has socket 1156 brackets, these are identical to 1155

KelDG · 24 Jun 2011 at 20:03

I have seen a couple of images with the 775 coolers installed and they are indeed offset about 10deg. The important thing is to make sure it is actually making contact with the chip, then test the temps, that is all you need to worry about.

wapcatlet · 24 Jun 2011 at 21:31

stulid said:
The A50 has socket 1156 brackets, these are identical to 1155

Thanks Stulid and KelDG for responding. A special thanks to Stulid for pointing out that I am indeed an idiot!

I adjusted the posts on the backing plate and it now fits into the 1155 mounting holes.
My excuse is that I've never installed one of these backing plates with adjustable posts before. Yes, it's a very weak excuse but it's the only one I have.

Thanks again guys.

weird_dave · 25 Jun 2011 at 21:03

I got one of he Asrock boards (cheapest I could find

) specifically for the 775 holes. Works brilliantly and I wish other board makers had put in such a great little solution considering how simple it is.
Glad I saw this post tho, I'd forgot it's rotated slightly and thought my heatsink had started to slide