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#11
Think i finally got it! Run through a 15min Unigine valley session and came out clean with the cards on SLI.
Turns out it must have been the HDMI Sound driver from nvidia. For everyone's knowledge that is installed automatically from windows. I had completely removed the drivers, and turned updates off. On the next boot though windows found display adapters on it's own, practically the barebones drivers - and it seems that during that process it also downloaded the sound drivers as well. While intalling drivers i only installed display drivers + Physx, but later on (as said above) found the sound ones installed too.
I don't know if you mark threads as solved/closed in these forums, but if so, give me a day or two to test them properly, so we can be sure
EDIT: Well.... NOPE. Had another one.
EDIT2: As far as i've seen the 1st card will pass pretty much anything with flying colors, while the 2nd doesn't seen to like them that much.. Some further testing and then if it gets down to that, RMA
Last edited by Neuron; 16 Sep 2013 at 11:26.