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post #41 of 98
Quote:
Originally Posted by Defoler View Post
You are confusing qpi-pll and cpu-pll.

Cpu-PLL default is 1.8v, and can be left on auto for the 980x. It doesn't help unlike the 4 core I7s.
1.4 tho, will make the chip very unstable. Don't do that.

QPI-PLL (which is default at 1.3v( is not setable in the R3E, but the QPI/DRAM (aka vtt) is, which should be set to 1.35v for 24/7. You can push it to get higher uncore, but not needed for 24/7.

In the R3E settings:
Cpu = 1.375v
QPI/DRAM = 1.35v (thats the vtt)
Dram = your memory spec.

Thats it. No need to touch anything else. Leave the rest on auto.
1.4v cpu pll will not at all make it unstable. It will make it cooler and easier to OC though.
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post #42 of 98
Thread Starter 
Quote:
Originally Posted by Defoler View Post
You are confusing qpi-pll and cpu-pll.

Cpu-PLL default is 1.8v, and can be left on auto for the 980x. It doesn't help unlike the 4 core I7s.
1.4 tho, will make the chip very unstable. Don't do that.

QPI-PLL (which is default at 1.3v( is not setable in the R3E, but the QPI/DRAM (aka vtt) is, which should be set to 1.35v for 24/7. You can push it to get higher uncore, but not needed for 24/7.

In the R3E settings:
Cpu = 1.375v
QPI/DRAM = 1.35v (thats the vtt)
Dram = your memory spec.

Thats it. No need to touch anything else. Leave the rest on auto.
Used those settings at 25x165, primed for about 1 1/2 hrs. went to bed, woke up and its a x124 BSOD. up the VTT? so far thats worked the best yet.

Thanks for all your help and patience guys
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post #43 of 98
I haven't tried lowering my CPU PLL to 1.4, but it ran beautifully at 1.8. just another opinion.

I am running 170x25 for 4250. My processor seemed to like the 25 multiplier best.
Try:
160x25
vcore=1.375
pll=1.8
qpi=1.35
ioh=1.10
ioh-something = 1.50
ich=1.10
ich-something=1.50
dram=1.64
manually set your memory speed low and loosen your memory timings, and leave everything else alone.

Mine is very stable with these voltages and running 4250, so hopefully yours can do 4000 at these voltages.
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post #44 of 98
I run my 970 with the CPU PLL at 1.42v. It was something that was discussed over at xtremesystems to help stabilize an overclock on 32nm chips. For 45nm chips, yes, you need 1.8 or higher to get it stable, but not for 32nm 9xx chips. I forget exactly what it does, but it does help on high overclocks. That being said, if you tried the settings I gave you, then I am not sure what else to try. 32nm chips are finicky with voltages and can become unstable with too little or too much.
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post #45 of 98
Thread Starter 
well so far, with esp42089's settings, it will run prime for a few hrs, then hits me with a x124 BSOD. Only thing I havent tried is the 1.4PLL. Some say do some say dont, what If I tried it at 1.6? or would it have to be one way or the other?
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post #46 of 98
I say give it a shot with PLL at 1.4v and report back. I'm very curious, I may try it as well, lol. Sorry my settings didn't help you.
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post #47 of 98


I hope this helps you when i overclock i do one thing at a time i leave everything on auto like memory i have noticed that its hard for me to overclock for more than like 180 buss so im using all clock petty much.

im coming from a amd system and im gonna say im having a hard time overclocking but im stable at 4.3ghz!!! took me forever to find a stable setting
    
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post #48 of 98
Is it stable at standard settings running memory at its rated spec? You need a starting reference point to work from, no point in trying others peoples settings, as you can see you are getting no where!! If the issue is hardware you need to home in on the issue if not you need to fine a stable point and work from there.
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post #49 of 98
Quote:
Originally Posted by YerMother View Post
Is it stable at standard settings running memory at its rated spec? You need a starting reference point to work from, no point in trying others peoples settings, as you can see you are getting no where!! If the issue is hardware you need to home in on the issue if not you need to fine a stable point and work from there.
ive always backed off my ram and than upped it once i got my overclock
    
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post #50 of 98
Quote:
Originally Posted by andrew149 View Post
ive always backed off my ram and than upped it once i got my overclock
I agree but if it's not possible to run at stock speed with memory at it's rated speed then it's pointing to a hardware problem. The fact that he is struggling to reach this overclock has me thinking.
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