Speed stepping even though it's off.

i have the same problem with my evga 750i FTW. i have speed step off but it still cuts my multi down to x6 when i'm at idle. i want to know what else needs to be disabled.

Did you guys flash the bios with the OCed settings? If you did, that can be the cause. If this is the case, I recommend in bios selecting "Restore Bios Defaults", rebooting, and flashing the bios again. This tends to fix the issue.

The eVGA 680i used to do this.

also, after flashing, try loading the optimized defaults first thing.

Make sure CE1 support is also disabled

Can you confirm that C1E is off?

I have a 680i and when in bios I have to hit F4 to "unhide" options. I think C1E is 1 of those options. hope this helps