Overclocking probs, I think power supply related

Soldato
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Okies, for the past few days I've been having lockups and freezing screens occuring quite regularly. I've tried a bucketload of mobo settings, speeds, voltages, multis, etc, (theres virtually nothing left to try!) and kit still occurs both in games and when running orthos and prime95. Its not heat related as the cpu idles and loads at a lot temp than me previous two I had. Ram is fine and dandy, runs up to 950mhz actually (all sticks checked individually). So at this point I'm looking at other options, hence power supply. What I'd like to know is, when a pc freezes/crashes (not black screens) is this "generally" considered to be power related?
 
Okies again, I've got result of sorts here. I Put everything back to stock, (266 x 9) and set the memory divider to x3 which puts me ram at default speed (geil ULL pc6400c 400mhz, 800ddr) and re-ran orthos and it bombed out and froze at about 30secs.
I went into the bios to have a check and noticed I'd left all the overvoltage settings, 1.45 vcore, +0.2v MCH and +0.2v FSB at those settings, I'd forgotten to reset them to stock. I did this and rebooted and started orthos again. Its been running now for about 30mins with no probs at all. All other times, orthos would fail at anything between 30 secs and 4 mins. This says to me its deffo power related. Now, is it the PSU itself or power regulation on the mobo?
Anyone here have any thoughts on this? Any help would be appreciated.:)
 
Mobo. I found the same with a couple of boards. Too many voltages and the board takes a fit. Even with good cooling. Maybe try a different bios?
 
Mobo. I found the same with a couple of boards. Too many voltages and the board takes a fit. Even with good cooling. Maybe try a different bios?

I've tried both f4 and F5 (only two available). I've since been running orthos with no probs at 400 x 6 (stock speed at 2.4ghz)@ 1.38 Vcore so again me ram is at default. This says to me that at least the mobo will do 400mhz and is stable as well at that speed. I've also tried 340 x 8 (2.7ghz) @ 1.38 Vcore and its stable at that speed also. What other settings/option do you suggest I try?
Seem to be getting somewhere at last.:)
 
Right, tried some more and I'm now at 400 x 7 (2.8ghz) @ 1.385 Vcore orthos stable for about 15 mins (not long I know but considerably longer than 4 mins as before). I'll try a bit higher now and see at what point it fails.:)
 
I have E6600 running at 3200Mhz x9 bus 360 FSB 1440 @ 1.35v. PSU problems are some of the hardest to to pin down. I would assume @ stock everything runs fine and stable?
 
Ok, this is surprising, I'm now orthos stable (for 6 hours) at 3.195ghz (355 x 9) @ 1.385 Vcore, with the memory at 355mhz (710mhz DDR) with 4-4-4-12 timings.
Now these voltage settings are a lot lower than before and its nice and stable too. I'm wondering if this is summat to do with the bios, I read somewhere that the one bios version will allow a high FSB, but with lower memory speed, and another allows high memory speed with a lower fsb and I'm thinking this might be the case here.
I'm gonna try 365 x 9 and see what happens with those settings.
Heres hoping:)

Update: pc bombed out at 3.4ghz and upping Vcore from 1.385v to 1.4v made no difference, still failed. I'm back down to 3.3ghz (367 x 9) at 1.385Vcore and its all running well. I've now got a higher, more stable overclock than before, and lower voltages, and temps never go over 48c load (orthos). Now to tighten the memory timings to stock and try again.
 
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