Got some weirdness with my P370EM3 from Metabox running the 2T bios and using a BCLK oc. Also using SVL7's modded bios (80.04.67.00.01) on both vid cards.
Using Nvidia 314.22 Drivers, Killer Networks 1202 1.0.25.1224
With SLi Enabled
Enabling BCLK change even one step up causes a black screen followed by a power down a few seconds later and Intel XTU complains it wasn't exited safely.
With SLi Disabled
Can enable the BCLK up to it's stable OC, somewhere around 105, Killer networks 1202 wireless card fails to connect to any wireless, and the SLi option disappears from the Nvidia control panel. The missing card and the wireless still fail when reset back to 100, a reboot is necessary to get them available again. The Video card still shows up in device manager.
Raid and all other features work ok, and I was able to swap my windows key back to the left side! (That was really irking me too!)
At least I have a rough idea of what BCLK my CPU can do.
Is anyone else having similar issues? Or has anyone running SLI GTX 680Ms used BCLK successfully?