Originally Posted by Rezard
Thanks, TriBeCa! Setting my RAM to it's intended timings helped. I no longer get stuck on my post screen. That "cold boot" thing sure is annoying, but as long as it's not a bad thing.
I've also been able to find stability at 4.9Ghz with 1.39v. I haven't been able to get through more than a few passes of IBT at 5.0Ghz. Got a kewl CPU-Z shot, though!
Stupid question; Could lowering my RAM speed from 1600 to 1333 increase my overclocking headroom? Or by decreasing or increasing the timings? I know, I know, I'm just reachin' here. It just doesn't seem like there's much between me and a stable 5Ghz. I've already tried adding more ATV (more than ever before). If offset is still at +0.005 and ATV at +0.080 for 4.9Ghz, how much more would you expect is needed for 5.0Ghz?
Thanks again, TriBeCa.
More or less +1 to what nagle said. With Sandy Bridge your RAM OC is going to be almost 100% independent of your CPU OC. My recommendation would be to keep your RAM at stock and find the CPU OC you want / are happy with, and then once you have that you can try OCing your RAM. Definitely don't do both at the same time because it's extremely hard to tell which one is causing any instability.
Do you have a 2500k or a 2600k? If you have a 2500k I'd say you're already doing really well to have 4.9GHz. Very few people on OCN have 4.8GHz+ with a 2500k, most have settled with 4.5-4.6, and AFAIK only two people have achieved 5GHz (and I'm pretty sure they're both using water cooling).
There's no real way to say what voltage to expect you'd need for 5GHz--your chip may not be capable of that speed under any amount of voltage. On a 2600k I'd say just keep bupming the voltage up bit by bit as long as you're comfortable... if you're not comfortable going higher then stop and go back to what you had before. A 2600k should be able to get there, but most 2500k's won't.