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The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 37

post #361 of 713
Quote:
Originally Posted by EarlZ View Post
I got the 123 BSOD after about 9hrs of Prime95 blend and this is at 1.360VID with a NEGATIVE 0.025 offset.. What seems to be wrong? I've tried VTT upto 1.200v with this and I still get BSOD's a few hours after into blend.. my chip not able to do 4.5Ghz?
Try manual voltage.
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post #362 of 713
I tried to manually volt it at 1.360 w/o any offsets this time

Ran 30 loops of LinX ( I dont really like this as ppl say it degrades the processor so fast )

Right now at stock 1.050VTT
Memory at 1333Mhz 9-9-9 1.5v
HT-OFF, all power savings off

All other voltages in AUTO, PLL over voltage OFF



On the first page 123 says VTT/QPI so I should be playing with the VccIO right and not the Vcore?'

If it matters the chip i have can only boot upto x49 w/o PLL over volt, highest i've tried with PLL over volt is 5.2Ghz but didnt try anything further.. so I recon something about 46-47 is the upper limit for my chip in terms of acceptable voltage+temps in OCing?
Edited by EarlZ - 5/7/11 at 11:06am
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post #363 of 713
I think my chip really cant do 4.8Ghz, I've tried voltages upto 1.45v (loaded, using a DMM to verify) different PLL/VTT/VccSA/vDIMM voltages and I still get a BSOD in Prime95 Blend.
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post #364 of 713
Thread Starter 
you need to use CPU PLL overvoltage man, and 1.45v max with llc level2.
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post #365 of 713
Already enabled PLL over voltage, UD4 has no LLC levels. I have it enabled.
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post #366 of 713
I noticed that my Vcore in bios is different than what is in CPUZ. I thought I had a bad chip because in bios I set it to 1.34 but in CPUZ its at 1.104V for a mild 4.3ghz OC. Im not sure what the deal is, but my temps are super low and still haven't gone over 50 over the last 20mins... Not sure what the ambient temps are but Im not freezing in here - probably in the 20s.

batch number is L101B216, I got it from NCIX.
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post #367 of 713
I have around 28-30c ambient temps which shoots even as high as 36-38c during hot afternoons, Im using a D14 and im getting about 58c tops with prime smallFTT this is with stock volts and stock speed, is this result expected or am I getting a little to high on the temps? ( considering the cooler? )

With LinX+AVC @ 1.45V loaded (via DDM) and 4.8Ghz I get around 93c!!
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post #368 of 713
Getting a bit disappointed with my UD5 here. There are huge vdroops even with LLC enabled (like 0.08v-0.09v) and I cant seem to achieve a stable oc at 4.5ghz without increasing the in-bios voltage to 1.395 or more (still testing and increasing). LLC almost seems broken imho. Using F3 bios.
    
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post #369 of 713
Initially I had issues with getting 4.5Ghz to be stable, was using F4 and I needed to raise VTT to 1.2 else it would out right fail @ 4.5Ghz even in all auto. I moved back to F3B and full auto with stock VTT made it stable with 4.5Ghz.. maybe you can try another bios?

Im using UD4, Right now im going to make sure that my 2600K can survive 24hrs prime blend before I try to move up to a higher speed, so far its been 8hrs and its pretty stable.. with my 4.8Ghz test it would error out at 2-3hrs after.
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post #370 of 713
I actually managed to do an 11 hour run with 1.385v set in bios, but when I did a 1.390v run last night it crashed after only 30 minutes or so. It may be because I turned off PPL overvoltage, but I thought that were mainly relevant for even higher clocks?

1.395v and PPL on now. Going to do a long run and just leave it at that if it checks out. 4.5ghz is enough for me, but I really dont want to step down from that. 1.380v max idle and 1.308-1.320v on prime load (according to cpu-z). Temps hasnt crossed 74c on any core yet.
    
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