Originally Posted by Akehage;13708992
Baj2K. What VCore do you have for your stable 4.8GHz? We have pretty much simular systems.
VCore is 1.40. I need 1.425v for stable 5GHz. The CPU is rated to 1.52 according to Intel so as long as you can stabalize temp below 70* in Prime95 I wouldn't sweat the voltage up to about 1.45v. But that's me... ymmv, caveat emptor, don't poke the tiger...
I have a customized Noctua air cooling setup with numerous fans pushing ~700 - 800cfm thru the box so I'm stable at those voltages and temps never exceed high 60's for 4.8GHz and low 70's (72*) for 5GHz in Prime 95. I keep it at 4.8GHz 24/7 because the 0.2GHz made hardly any difference in real world applications, so why add the extra 4 - 5* in temp. I also OC'd the GTX 570 to 1003/2200 but needed to hack the BIOS and run at 1.2v. I run 24/7 at 950/2000 at 1.050v now. FYI the P7200+ run was with the CPU at 4.5GHz and GTX 570 at 950/2000 at 1.050v... I haven't re-run maxed out it since I updated the drivers to 275.27. I think P7500+ is possible but I'm too chicken to try it again... 1.2v + max OC + 3DMark11 = "Iceberg dead ahead"Official ASUS P8P67 Overclocking GuideOne last thing... in my experience OC'ing the cards memory doesn't do much on Benchmarks. In other words you went from 2000 to 2200 which is a 10% inncrease. You will not see anywhere near a 10% increase in any benchmark score or FPS but will see a loss of stability. At least that's what it did for me, just a few FPS. What it does do is make the card unstable in 3DMark11. Trying lowering that to stock then upping the GPU clock. I worked on maxing out the GPU before I tweaked the memory. And as you can see I'm back to 2000MHz on the memory cause it just runs more stabile that way. I'm not recommending this for anyone to try, this is just what I did it, at my own risk, if you decide to try it that's your own choice at your own risk... Anyway, here's the plan I used for my overclocking.., I'd set it to 900/2000 at 1.050v to see if it's stable if it wasn't I would go up .010v until it stabilizes or I hit 1.080v. My rule is don't exceed 1.080v, I'm not going to want to run 24/7 above that voltage anyway so why bother. I figured if it never stabilizes at up to 1.080v at 900/2000 then I'd leave the voltage there and drop the GPU 5 to 10MHz at a time until it's stabile and that would be my max OC. I'd decide if I wanted to run 24/7 like this and if not I'd drop voltages and GPU until I'm stabile, happy, and comfortable. If it did run stabile at 900/2000 then I'd keep raising the GPU 10MHz until it's not stable again then back of 1MHz at at time until it was stable. That would be my max unless I wanted to go extreme or add water. I'd then decide if I wanted to run 24/7 like this if not I'd drop voltages and GPU until I'm stabile, happy, and comfortable. This took about 3 hours.
Once you get it stabile then run BFBC2 and wait for it to constantly crash and then start your OC stabilization all over again... Edited by baj2k - 6/1/11 at 12:06pm