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Curious OCing Issue on i5-650

post #1 of 9
Thread Starter 
Greetings,

If you're interested, the original thread is located here, however I will be provided adequate information within this thread.

I've been folding for a few months now, OCed to 4.008ghz. Everything was perfect up until a few weeks ago when I would get BSOD 0x00000101 after about an hour of folding. The original thread concluded this to be a v core issue. The weird thing is that I've had this OC for over 3 months and had no problems, even while folding, and then it just started happening.

Unbeknownst to me I was alter the VTT voltage value thinking it was the Vcore value and OCing that way, all the while leaving the Vcore to auto. My BIOS would auto-adjust (VCore settings was left to "Auto") the voltage to the bclock and under load it would be short voltage.

With this knowledge I have been trying to manually set the VCore this time, instead of the VTT. This new, correct, method of overclocking has presented itself as problematic:
1.) I have set the VCore to +.024 (Red/not recommended setting) and get a BSOD instantly
2.) Should I go higher than that even though it's in the red?

Here are my current settings for the BIOS:

167x24 - bclock and multiplier respectively
RAM Timings/MHZ - auto
VTT - auto
PLL - auto

Sorry for the wall of text, but I felt it was necessary to properly answer my question if you are able to.

Thank you very much for your time, it is most appreciated!

Sincerely,
Mike
Edited by SI51 - 5/10/11 at 2:32pm
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post #2 of 9
Whats your vcore at for that setting. What are temps? Dust and temps could be a factor.

EDIT: If temps cause it to throttle down then back up could cause instability.
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post #3 of 9
Thread Starter 
I have no idea what, or how to tell what the vcore is at in BIOS. I do have CPU-Z and I can give the value from there. That value, under 100% load, is 1.304.

As for temps: they never go above 61*C.
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post #4 of 9
Chip is fine @ 1.304. Actually kinda low. I would bump the Vcore and the VTT.

My i5 750 needs 1.312Vcore for 4.0ghz.

Of course no 2 chips are the same. But its in the same ballpark.

I'd consider that chip safe to 1.45Vcore.
Edited by Shiftstealth - 5/10/11 at 2:52pm
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by Shiftstealth View Post
Chip is fine @ 1.304. Actually kinda low. I would bump the Vcore and the VTT.

My i5 750 needs 1.312Vcore for 4.0ghz.

Of course no 2 chips are the same. But its in the same ballpark.

I'd consider that chip safe to 1.45Vcore.
There in lies the problem. I don't know what the setting is that it is normally, so when I set it to +.006, I don't know what value it is.
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post #6 of 9
Set it to stock and see what CPUZ says.
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post #7 of 9
Thread Starter 
So I did that and now it hangs on the flashing underscore screen. Even when I change to a profile that was saved and know to work.

[EDIT] tried a hard CMOS reset and that failed to solve the hanging underscore screen. Any suggestions?
Edited by SI51 - 5/10/11 at 6:20pm
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post #8 of 9
Quote:
Originally Posted by SI51 View Post
So I did that and now it hangs on the flashing underscore screen. Even when I change to a profile that was saved and know to work.

[EDIT] tried a hard CMOS reset and that failed to solve the hanging underscore screen. Any suggestions?
My system does that when it can't identify a boot device.

Make sure you didn't pull your SATA cables out.
Edited by Shiftstealth - 5/10/11 at 8:10pm
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R7 1700X 3912 Mhz @ 1.375v BIOSTAR X370GT7 eVGA GTX 1080 ACX 3.0  CORSAIR Vengeance White LED 3200 Mhz (4x8GB) 32GB 
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256GB Samsung 850 Pro 1TB Samsung 850 Evo NZXT Kraken X52 Dell S2417DG 165Hz 1440p G-Sync 
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Razer Ornata Corsair 750 RM Phanteks Evolv ATX Logitech G602 
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post #9 of 9
Thread Starter 
Thanks for the advice. I've gotten a folding stable OC now. I think it was hanging because I was trying to boot with my second monitor plugged in and it wasn't properly secured.
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