Post
Topic
Board Mining (Altcoins)
Re: Unable to detect more than 3 GPU on msi z77 gd65 with Windows8
by
nybbler905
on 31/03/2014, 16:26:24 UTC
this should be a sticky in troubbleshooting hardware/Multi-GPU mining

https://bitcointalk.org/index.php?topic=36061

I'd bet it's covered there either in BIOS settings and/or jumpering the slot

I think I need to do pin shorting but can someone confirm ? I cannot see this mobo in the list.

That isn't an all inclusive list.  Try the A1 B17 jumper and see if it detects. It's a quick troubleshooting step to find out if that is your issue.
yes and no on the ' quick ' part, there are a few posts later in there that reqired 1 slot empty on a board that had 7 slots and a similar ( not from the same manufacturer ) where 1 slot needed a jumper, the rest didn't.  It's a long read and could be worth it for alt coin mining as GPUs are still cheaper to get ( for me at least, and only the older OpenCL ones ) than dual miners or the new asic script miners.