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Can't get my i7 920 to be stable @ 4GHz - Page 2

post #11 of 33
Quote:
Originally Posted by Z Overlord View Post
Setting llc to level 2 is not in my bios, only on or off.
Then go for one, sorry I didn't know that the UD3P had different BIOS settings than my UD3R. Everything else should be pretty much exactly the same I would assume.
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post #12 of 33
Thread Starter 
So I did what you say and my pc posts

Now to stress test
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post #13 of 33
Keep working at it...
post #14 of 33
Thread Starter 
Ok with your settings (Vcore @ 1.3250, LLC on) I failed LinX (set to run 20 times) after the 3rd pass thing.

I will try a higher vcore to see if it goes farther.

But hey, your advice was good, before my PC wouldn't POST at 4GHz.
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post #15 of 33
Quote:
Originally Posted by Z Overlord View Post
Ok with your settings (Vcore @ 1.3250, LLC on) I failed LinX (set to run 20 times) after the 3rd pass thing.

I will try a higher vcore to see if it goes farther.

But hey, your advice was good, before my PC wouldn't POST at 4GHz.
Your VCore seems to be pretty high enough as it is.. Maybe try raising the QPI voltage instead. Intel recommends under 1.35 but I keep mine at 1.455 24/7.
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post #16 of 33
Thread Starter 
by QPI do you mean QPI/VTT?

And are you sure about the CPU PLL being at stock? BTW my multiplier is 20x, which I hear is less stable than 19 and 21, but 21 is turbo is which bad right? And 19 is so low lol.
Edited by Z Overlord - 1/18/11 at 2:59pm
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post #17 of 33
Quote:
Originally Posted by Z Overlord View Post
by QPI do you mean QPI/VTT?

And are you sure about the CPU PLL being at stock? BTW my multiplier is 20x, which I hear is less stable than 19 and 21, but 21 is turbo is which bad right? And 19 is so low lol.
Yes I mean QPI/VTT. I am also very sure about CPU PLL. You may actually want to try lowering it. I have never ever seen a case where CPU PLL needed to be raised. I actually have seen cases where people have found more stability by lowering CPU PLL to 1.7 or 1.6. Raising CPU PLL is the fastest way to degrade your chip though. I wouldn't recommend raising it.

Also, I didn't realize you were using a 20x multiplier. Thats a bad idea. 21x is 99% of the time the most stable multiplier for a 920. That may solve your stability problem right there.
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post #18 of 33
Thread Starter 
Quote:
Originally Posted by Airolden View Post
Yes I mean QPI/VTT. I am also very sure about CPU PLL. You may actually want to try lowering it. I have never ever seen a case where CPU PLL needed to be raised. I actually have seen cases where people have found more stability by lowering CPU PLL to 1.7 or 1.6. Raising CPU PLL is the fastest way to degrade your chip though. I wouldn't recommend raising it.

Also, I didn't realize you were using a 20x multiplier. Thats a bad idea. 21x is 99% of the time the most stable multiplier for a 920. That may solve your stability problem right there.
But 21 requires Turbo to be on, which you were against no?
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post #19 of 33
Quote:
Originally Posted by Z Overlord View Post
But 21 requires Turbo to be on, which you were against no?
No, it does not require turbo to be on.
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post #20 of 33
my god airolden what high voltages you use!

set llc off...
cpu to 1.35
qpi voltage to 1.315
ram what ever memory needs
multi 20
bclk 200
spd multiplier 8

qpi pll 1.2
cpu pll 1.8
and all the others the same... dont change the clock skew leave it auto. and give it a shot...
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