Evening
Earlier today I bought 2x Gigabyte 980 Ti Gaming G1 cards.
As I got home and started to fiddle around with overclocking them I noticed that the core voltage of the 2 cards is somewhat unstable, even up to the point that raising the core voltage is completely ignored by one card.
After performing some google-fu it became apparent that this issue has been around for about a year already, and also includes the above mentioned card.
At the moment the simplest solution seems to be to overclock the cards separately, setting one card to 15-50 Mhz lower than the frequency you're aiming for. This will somewhat even out the core voltage, but it's far from perfect and requires some trial & error.
I can only assume that you guys are aware of this issue, thus I'm wondering if there will be a solution presented soon, or are you completely ignoring it?
This thread contains a lot of useful information: http://hardforum.com/showthread.php?t=1837361
Thank you in advance!