Quote Originally Posted by Sam_oslo View Post
VVT=1.32v to 1.34v looks Ok for this Uncore-frequency, and you are not doing it worng, the VVT jumps by 2 in UD7-BIOS, from 1.32 to 1.34v.

This looks like a good start. Save it as a profle and and don't touch it. Keep it as a refrence, and save your changes and new attempts as a new profile. (F11 to save a profile, F12 to load, in BIOS)

Try to decrease the vCore a few nothes, and if it fails the stabilty-test, then your previus attempt on 4.13GHz needs more vCore. Don't use turbo, try 160x26 or 165x25 with more vCore for your next attempt, if you want more than 4GHZ.
I spent a lot of time last night working on overclocking. I was able to get to 210 BCLK, stable, by lowering the uncore multiplier from 16 to 15, and running at 1.34 Vtt and an 8x memory multiplier. I backed off of the BCLK to 200 so that I could run a 10x multiplier for memory and I set the uncore multiplier to 19x and I was able to run stable at 1.3 Vtt. Upping the CPU multiplier to 20 and the VCore to 1.4V gave me a solid 4GHz clock with a 200 BCLK. However, trying to go to 4.2 GHz failed, even with pumping the Vcore up to 1.4V.

So I tried dropping the BCLK to 160 and using a cpu mult of 25 to get to 4 GHz. Again very stable at 1.35V Vcore. But again, going up to a cpu mult of 26 for 4.16GHz failed miserably.

I'm now playing around with voltages to see how low I can get them while running 25x160 and it's looking like 1.3375V Vcore with 1.28 Vtt is stable or close to it at 4GHz. So why can't I get a stable overclock of greater than 4GHz? Increasing Vcore from 1.3375 to 1.4V doesn't seem to allow me to increase the multiplier to 26. Increasing Vtt from 1.28 to 1.34 doesn't seem to let me increase the multiplier. My temps are in the 20's at idle and in the 50's at full load for extended burn. I've never gotten a core over 61 degrees with anything I've tried.

Maybe I need to adjust Vdroop? I'm currently running load line at standard, could that be what's causing me to hit a wall at 4GHz?

Alternately, I could drop the BCLK back to 133 and up the multiplier and see if that helps at all. But previous experiments didn't seem to indicate that this would work.

Is there something I'm missing for overclocking over 4GHz when I have plenty of room to increase Vcore, Vtt, and thermals? Increasing voltages doesn't seem to make any difference in stability at all at this point.