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post #1431 of 9641
So my computer goes black and freezes at 3.8Ghz@1.45v, 2.6GhzCPU-NB@1.4v, NB1.3v, MEM 1600@1.7v stock timings on S&M CPU (FPU) test. BlackOmega what does this mean?

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post #1432 of 9641
Means it's not stable. It's usually an indication that your cooling is insufficient. What are your load temps during the FPU test? (The FPU portion of S&M is by far the most demanding stress tester I have used, and it will get your CPU hotter than prime/orthos/OCCt).

When changing CPU clocks, I typically run the short duration test @ 100% load. If it passes that with good temps, I'll run the longer test usually. Or if you want to do an even quicker test just run the L1,L2 and FPU tests.


EDIT:dir_d, when using S&M be sure you don't have anything else running. When you start reaching the upper end of your CPU's potential multitasking while stress testing will cause failures.
Edited by BlackOmega - 10/29/09 at 7:11pm
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post #1433 of 9641
I ran it three times, 1st time it failed at CPU FPU which the max temp i had was 45C so that couldnt be right. Second time it failed at Power Supply test with like 6 seconds till the end of the test. 3rd time after using different PCI-E rails for my PSU it passed. Im gonna run some more tests i might have been drawing too much out on one rail but i dunno.

Those two times it failed were just black screens no errors no beeps no bluescreens...
post #1434 of 9641
Ran the short S&M Test again with my CPU-NB@1.35v and my NB@1.2v and it passed again.
post #1435 of 9641
Try running the medium duration (typically about 30 minutes). And that's weird that you got a PSU failure. I honestly have never seen one of those before. I've seen L1, L2, FPU and memory on S&M but not that.

I'm assuming that that Antec of yours is a split rail PSU. Over at the MSI forums, they HIGHLY recommend single rail power supplies.

And a theory that I and the other members of the 939 club have is that, the higher you go over max recommended voltage the lower max allowable temp goes. However, we have no way of proving this.

But here's the general idea: If max recommended voltage is 1.40v and at that voltage max allowable temp is 71C.
Then you run 1.50v into the CPU, max allowable temp would be 60C and so on. I personally believe that it is exponential. Meaning that with each step the max temp goes down quicker. So @ 1.50v, my personal belief is that max allowable temp would be more like 55C.

But like I said this is just a theory we had. It would be nice if we could prove/disprove it.
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post #1436 of 9641
Dir d,
Looks like you're running good temps on the new HS with those Scythes. I like em'! I'm glad that you do!
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post #1437 of 9641
Ran more Tests those black screens are just CPU voltage nothing to do with my PSU. still having a tough time with 3.9Ghz with 2.6Ghz NB
post #1438 of 9641
Quote:
Originally Posted by dir_d View Post
Ran more Tests those black screens are just CPU voltage nothing to do with my PSU. still having a tough time with 3.9Ghz with 2.6Ghz NB
I never thought they had to do with your +12v rail if that's what you mean.



To everyone: How will having my NB OCed so far (2750) affect my ability to set tight timings? Is there any affect? Does it make it easier? Harder?
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post #1439 of 9641
Ran S&M for 30min 3.8Ghz@1.425v, CPU-NB 2.6Ghz@1.3v rest auto and passed so i think i got a stable 3.8 everyday overclock. Im gonna shoot for 3.9Ghz and 4.0Ghz tomorrow since so far at 3.8Ghz my temps havent hit 47C.
post #1440 of 9641
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Quote:
Originally Posted by SwishaMane View Post
I will make a note to check my number when I pull the cooler off next time. I wouldn't mind knowing what my chip is up to.

How'd the sli thing go? I tried an sli hack I found for any mobo, and after trying it a few times, it just wouldnt go. BUT, I can't dismiss it as "not working" because I was on a gtx 285 and gtx 260 C216. Only two cards I had available. Upon reading more into the hack, it only support two of the same cards. Not part numbers like oldschool sli, but I would have to have 2 gtx 285s, str8 up.

Well, now that I think of it, the "5" in 285 creates a whole new card right? I can only sli mine with 275, 285 and 295s, right? And the 260 would sli with another 260, and 280? Or am I completely wrong, and sli, if the hack worked, should have worked fine?
did not go good. Not sure if the OS was already in trouble because of BSOD's (100's) or just because I messed up some drivers. But that install is toast.

the thing about SLI is that the core is the same.

Quote:
Originally Posted by dir_d View Post
Ran S&M for 30min 3.8Ghz@1.425v, CPU-NB 2.6Ghz@1.3v rest auto and passed so i think i got a stable 3.8 everyday overclock. Im gonna shoot for 3.9Ghz and 4.0Ghz tomorrow since so far at 3.8Ghz my temps havent hit 47C.
More voltage! bump your cpu-NB to between 1.30 -1.35 your probably gonna need 1.5+ volts for 4Ghz but it will be fine.
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