Originally Posted by fac
Thanks for the comments.
My 4400+ did 2.3 Ghz with no problems. No need to lower the RAM divider or the HT multiplier. Of course, that's only a 100 Mhz gain. I tried 2.4 but Windows crashed, even if I lowered the RAM divider and HT mult, so I may need to bump up the vcore a bit. The default is 1.35 v, you guys say 1.45 is still safe? I'll try that tomorrow.
Well, I don't know about the quality of your RAM, but your HT should be fine if all you did was bump the FSB up to 209/210, keeping the CPU multi at 11, so you shouldn't really have to mess with your HT until you exceed 1100 (give or take, though I know that the common idea is to keep it as close to 1000 as you can, but 1100 is fine). I'd say that even your RAM should be fine with such a small increase in FSB, though it might not be good overclocking RAM--however, 10MHz higher on the RAM should be nothing--and taking it down to the next lowest setting will probably be worse than running everything at stock because I think you'll have to run the FSB up to 240MHz just to get the RAM back to stock speeds--there's no guarantee that you can do that with your mobo. Just out of curiosity--did you make a note of the stepping of the CPU before you installed it? If so, what stepping was it?
Also, before you put a divider on the ram, see if you are able to increase the voltage to the RAM/loosening timings to keep it as close to stock frequencies--you might not need to use a divider just yet.
Also, did you first systematically go through your overclocking?--things like make sure to find your mobo/CPU's max FSB? Like by lowering the HTT and RAM to their lowest multipliers (to take them out of the OC'ing equation) and slowly increase the FSB and vcore (keeping the highest CPU multiplier) until you get so high in FSB that adding vcore no longer helps and the computer no longer posts (this is your max mobo/cpu fsb)? And then you should find your max RAM speed--then use a divider (or dividers) to get to a point where you get as close to your CPU's max FSB setting and keep the RAM as close to stock speed (or faster if possible) as possible--you'll have to tweak the RAM's voltage and latencies to get the fastest settings that allow for the most stability. Then, take care of the HTT so it's around 1000 (admittedly, while I said that you can go over 1000, the HTT doesn't really affect performance until it drops to something like below 600 I think). Make sure to run a quick stability test each time you change a RAM setting--like orthos for a few minutes until you go to the next tighter setting. Once you think you've found a good combination of CPU/RAM/HTT settings, let orthos run for hours--if it fails, you likely have to change something like a ram latency or add more vcore or vdimm (or lower the fsb).
So, perhaps I've mentioned (don't remember if it was on this thread or a different one), unfortunately I have the worst OC'ing stepping, and my 4400+ runs fine with 1.3v at 2.3GHz. But the CPU will safely tolerate 1.45v--that shouldn't be harmful at all. But it shouldn't be necessary to get 2.4ghz stable--my mobo doesn't put out more than 1.4v vcore, and I can get to 2.5 stable with that. Are you sure you don't have FSB holes on your mobo, or it's some other setting (not vcore-related)? FSB holes have been known to happen with some mobos--don't know about yours though.
Well, good luck--I strongly recommend going with the systematic method of OC'ing, otherwise there are so many things you think you can change to possibly troubleshoot your OC, you're kinda just shooting in the dark--check out the OC'ing sticky in this forum, it's a great resource and full of info.