One of my cards hit the dirt 
Just popped it off to post office. In a round about way, hopefully one I get back is a good chip. Thankfully good one is fine and manages 2150 mhz in games no issue, now just need a second
Having said that going back to just playing with a single card, does show how poor SLI seems to have scaled for Witcher 3 me thinks! Down from 2 cards @ 2000 Mhz running at 85 fps maxed to 65 fps in same locations @ 2150 mhz. Not too bad for a single card

Just popped it off to post office. In a round about way, hopefully one I get back is a good chip. Thankfully good one is fine and manages 2150 mhz in games no issue, now just need a second

Having said that going back to just playing with a single card, does show how poor SLI seems to have scaled for Witcher 3 me thinks! Down from 2 cards @ 2000 Mhz running at 85 fps maxed to 65 fps in same locations @ 2150 mhz. Not too bad for a single card