Not as weird as it sounds, unfortunately. Basically the last day or so one of my GPUs hasn't been playing ball and kept throwing NAN errors. Had me flummoxed until today, when I gave up on Rivatuner because of it's unsigned drivers giving me gip again, not to mention its "interface designed by a dyslexic cave man" problem, so I switched to MSI Afterburner. Turned out, the reason it was throwing NAN errors was because the memory clock at stock was too high - my o/c has it significantly reduced, with other things up, as you'd expect - and Rivatuner only o/cs one graphics card at bootup, the other you have to do manually.
Still, it makes me happy to have figured that one out
In other news, watercooling is done - and am currently tweaking voltages to get stable at 4.5GHz.
Still, it makes me happy to have figured that one out

In other news, watercooling is done - and am currently tweaking voltages to get stable at 4.5GHz.