Ok so, I have the Rev6 Skyn3t bios installed on both my cards 780 TI KPE's. They never leave P0, even when sitting on the desktop, with nothing open but EVGA Precision XOC. With the stock bios, having XOC open doesn't force it into P). It's normally in P5/8 unless I'm watching video or somethings using hardware acceleration but not 3D rendering.
I like the bios, I haven't had any artifacting at 1275MHZ on core, stock VRAM speed. Problem is, sitting at 1136MHZ when it's idle, and not going into P5/8 except for one time, makes the cards 5-10C warmer than they normally are when idle. 62C/56C average GPU temp when idle is perfectly fine, I'm aware. But, it warms up my motherboard VRM a few C, and the extra fan noise required to not spike the cards to 67C/60C interferes with quiet video watching at night.
What I'm looking for, is an idea how to get the bios to put itself into P5/8 when in SLI. I noticed that I only have enough excess heat to raise fans when both are installed. I've tried setting the bios to top out at 876MHZ on its own. When I do that, it won't raise the clock when I add to the clock value in XOC. It will when I have it at 1006, but again, ambient air temp in the case is causing more fan noise. So, I'd like to have P0 at 876MHZ core, and apply OC values when in a game. Doesn't seem to want to work that way when SLI is enabled.