**Ivy Bridge Overclocking Guide** (with LN2 Guide at The End) - Page 9

Originally Posted by CallsignVega 

Hm, running into a strange issue with my 3770K. Right now stable at 1.35v for 4.85 GHz but if I try and bump it up to 4.9 GHz or more, Win 7 will boot up but fails to display the login screen no matter how much more voltage I give the CPU. Temps are pretty decent at these settings, low 60's in Prime95. Seems like the Windows 7 login screen is creating a wall for my CPU at the moment for some reason. System in sig, any thoughts?

Originally Posted by Nihilo 

Hey guys...I've been watching these forums and others for a while now and so far this is the best one I've found for how to overclock IB. I also just saw a vid for the Asus Auto Tune feature (I have an Asus P8Z77-V Pro) and was wondering if I should do that or OC manually. Keep in mind, I have haven't OC'ed before, but I have done a LOT of reading on it.

Originally Posted by 13thmonkey 

seems hot to me, check the hsf, seems maybe +10C, which is probably too small a gap for a push pin issue, but worth looking at.

Originally Posted by 13thmonkey 

I was in the same boat, the only OC i'd tried resulted in magic smoke and an rma'd mobo on a Q9550.
I also have a Z77 v-pro.
I found it really easy to get to 4.3 at low volts.
First make sure you are happy with temps and fan speeds, make sure fans go onto full at lowish temps
Using the software overclocking mechansim (turbo-V) I set the multiplier to 40 across all cores, ran Intel burn test to see what happened and monitored temps like a hawk. If I was ok with that I moved it up to 41, test again, and then to 42 etc. until I became uncomortable with the temps. then drop the voltage by its smallest increment, 0.005 I think, test again, repeat until failure. increase by one increment. In theory you could now increase the multi again and get a low temp than you had before but I was satisfied with 4.3 so I stopped. Save that profile.
Now go into bios and enter the same settings. using offset voltage, in software I needed 1.045, in bios it ended up at -0.02v offset. During later prime testing I found an error and had to increase the offset to -0.015V seems to be stable there peaking at 70C. I think at one stage I had to be 0.005V higher to get into windows than I needed for Intel Burn Test.
There's lots of other stuff you can mess with but I left all of this alone, i'm treating them as being for fine tuning of any overclocks or for more extreme.
However I am the most junior (well second most junior after you) of the overclockers here but that will get you somewhere and then you can figure if you want more.

Originally Posted by 13thmonkey 

I was in the same boat, the only OC i'd tried resulted in magic smoke and an rma'd mobo on a Q9550.
I also have a Z77 v-pro.
I found it really easy to get to 4.3 at low volts.
First make sure you are happy with temps and fan speeds, make sure fans go onto full at lowish temps
Using the software overclocking mechansim (turbo-V) I set the multiplier to 40 across all cores, ran Intel burn test to see what happened and monitored temps like a hawk. If I was ok with that I moved it up to 41, test again, and then to 42 etc. until I became uncomortable with the temps. then drop the voltage by its smallest increment, 0.005 I think, test again, repeat until failure. increase by one increment. In theory you could now increase the multi again and get a low temp than you had before but I was satisfied with 4.3 so I stopped. Save that profile.
Now go into bios and enter the same settings. using offset voltage, in software I needed 1.045, in bios it ended up at -0.02v offset. During later prime testing I found an error and had to increase the offset to -0.015V seems to be stable there peaking at 70C. I think at one stage I had to be 0.005V higher to get into windows than I needed for Intel Burn Test.
There's lots of other stuff you can mess with but I left all of this alone, i'm treating them as being for fine tuning of any overclocks or for more extreme.
However I am the most junior (well second most junior after you) of the overclockers here but that will get you somewhere and then you can figure if you want more.

Originally Posted by Teiji 

So what vcore did you start off with?

Originally Posted by Sin0822 

you can try the pll OV like the guy above said, but also i could also be the temperature, are you using your water cooler?