oulzac

Sounds more like a Vista or video options (driver or setting) issues, than a cpu issue. It could be your HTS/F is not on properly or there is not a good contact with your paste between the cpu and HTS, causing a heat issue?

Have you checked your temps when not running at stock?

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Templar848

I have never been able to get Orthos or Prime stable at anything over 3.21 ghz, and that requires 1.45 volts to be stable in an Orthos test overnight. Any less voltage and I get a rounding errors within an hour or two. I have managed to boot up to 3.3 at anywhere from 1.475 to 1.55 and can run Super Pi up to the 1M digit calculation with no problems, but Orthos fails due to a rounding error immediately below 1.5 volts, and generally fails within 2 minutes from 1.5 to 1.55. The system will not even completely boot into Vista above 1.55. I was able to get 3.26 stable at 1.55 volts for over an hour, but I felt like the voltage led to temperatures that were a bit higher than I wanted to run on a 24/7 basis.

All that being said, my temps are great. Temps at 3.2 ghz, with my fan at 60% at the 6 hour mark of Orthos were only 46c and never went above 47c the entire overnight run. During the 3.26 run, they seemed to hover at 48c most of the time and peaked at 50c. This was with the fan at 100%.

I have tried running my ram at 800 mhz, lowering the multiplier and raising the FSB. I have tried various voltage settings for the Processor-NB, NB and SB as well as various voltages for the ram. Granted, most of this has been fairly tedious work as I am still new to this, and most of what I have learned I learned from this site. Still, I feel like there is something I am missing, that I cannot gain stability. And that is seems to require much more voltage to achieve stability at given speeds with my system than with comparable systems in this thread. I have run the ram through the Vista included Memory tester as I cannot seem to get Memtest86 to work with Vista 64. The ram did pass the Vista test with no problems.

So, at this point I am sitting at 3.21 24/7 stable at 1.45 volts.

termin8tor

Yeah, when I'm running at stock the difference isn't even 4c. Stock speeds at idle are 24c (tested in speedfan and HWMonitor both give the same readings on both cores of the cpu) and the heatsink is sitting flush, also thermal grease is applied properly. It's just weird.

oulzac

Have you ran orthos or prime to test the stability?

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termin8tor

Yep, that's why I'm perplexed about the issue it doesn't make that much sense to me. I can run 3dmark tests through to the end without a hiccup. Orthos tests will stay stable for 8+ hours without any errors so I'm a bit confused.

I'm going to attempt putting the voltage up on the pci-express port to see if that helps at all.

oulzac

I would try other games first.
It may be an issue with Fallout 3.

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termin8tor

Well I thought about that. Except if I drop the cpu to stock speeds fallout runs perfectly. I'm going through the motions of changing the multiplier 1x at a time, and monitoring 3dmark scores to see if they get better or worse. Then I'll be able to see if it's affecting all 3d apps or just Fallout.

Schoolboy error on my part. I was watching the temperatures of each individual core and taking just one as the overall cpu temperature. I didn't realise the temperature is both cores at the same time. Under load I'm running at 50C

Nenkitsune

core temp readings on these chips is about 10c lower than actual temps from what I've seen.

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BE-2400 3.105ghz 8 hours orthos stable
BE-2400 3.484ghz on AIR PROOF!
7750 BE 3.3ghz Validation

Kuma790

There are so many people having trouble getting the Kuma past 3.2Ghz stable that I've come to call it the wall. Many can boot at higher speeds (I can get above 3.4), but it seems stability is a major issue anywhere 3.3 and above for the majority.

For my system, 3.2 is stable all day at low voltages with the memory, sideport memory, and igpu overclocked as well. Boost it up to 3.3 with any combination of multi and fsb, and I start to get rounding errors and the WEI causes my video driver to crash and restart. At 3.4, I can open most everyday programs, but all stress progs cause bsod, haven't tried any games.

Perhaps some of you guys who do have a 3.3Ghz+ stable setup can share some insight?

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3.2Ghz Stable Prime95 10 Hours
3.2Ghz Screen Shot
3.4Ghz Boot Windows 7 Beta (7000)
3.4Ghz Screen Shot

Nenkitsune

yeah, I run 3.3ghz stable with 1.42-1.44v (i think 1.44v was the absolute stable, but it runs fine at 1.42)
hell there was no problem with it either. I overclocked my NB up to 2.4ghz (but I think 2.2ghz runs a bit more stable) and my memory at their rated timings at ddr2-1066

getting PAST 3.3ghz hahaha...it takes on a normal day 1.55v to boot at 3.4ghz
if it's cold enough, i've gotten it to boot at 1.48v

the system will POST all the way up to 3.6ghz too (accidentally set the multiplier too high)

__________________
BE-2400 3.105ghz 8 hours orthos stable
BE-2400 3.484ghz on AIR PROOF!
7750 BE 3.3ghz Validation