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i7 860 - computer won't POST when over 4,01 ghz - Page 3

post #21 of 34
Your CPUz screenshot says alot about your RAM. As far as I can see, your 1600MHz RAM is actually DDR3 1333 with XMP support for 1600 (PC-10700, 667MHz x2, as seen here, also in the OP)

You are running an XMP profile @ 1.65V, when you should try it without XMP @ 1.5V 1333MHz. Up your multiplier, lower your BCLK, report back.
 
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post #22 of 34
Thread Starter 
Quote:
Originally Posted by Nick0matic View Post
Your CPUz screenshot says alot about your RAM. As far as I can see, your 1600MHz RAM is actually DDR3 1333 with XMP support for 1600 (PC-10700, 667MHz x2, as seen here, also in the OP)

You are running an XMP profile @ 1.65V, when you should try it without XMP @ 1.5V 1333MHz. Up your multiplier, lower your BCLK, report back.
Ok so wait, you're saying this RAM I have isn't native 1600 mhz??

Also, what multiplier are you refering to? CPU multiplier? If so, I'm already at 21, and that's the max for 860.
post #23 of 34
Thread Starter 
Also, how do I run without XMP? I should probably just make sure it doesnt go over 667 mhz, right?
Edited by dv986 - 2/3/11 at 10:47am
post #24 of 34
Quote:
Originally Posted by dv986 View Post
Ok so wait, you're saying this RAM I have isn't native 1600 mhz??

Also, what multiplier are you refering to? CPU multiplier? If so, I'm already at 21, and that's the max for 860.
With Turbo and Speedstep enabled, the max should be 24. If you have to, lower the DRAM strap to 2:6 or 2:8 if you are at 2:10
 
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post #25 of 34
Quote:
Originally Posted by AliceInChains View Post
increase your vcore.
this

Quote:
Originally Posted by dv986 View Post
Yeah, i went up to 1,35. Seems kinda unlikely that I would need so much more for 4,04 since for 4,01 I only need 1,34.. or maybe I'm wrong?
more

Quote:
Originally Posted by AliceInChains View Post
i wouldnt go much over 1.4
yeah pretty much, maybe 1.45 on water or better, but on air I doubt you can even cool over 1.4v and 1.4VTT @4ghz
 
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post #26 of 34
Thread Starter 
Quote:
Originally Posted by Nick0matic View Post
With Turbo and Speedstep enabled, the max should be 24. If you have to, lower the DRAM strap to 2:6 or 2:8 if you are at 2:10
Oh wow, with turbo mode I managed to go higher

But now that I'm testing it with prime, cpu-z suddenly shows that muliplier dropped to x21. Why is that?

And also, why was I not able to use x21? I mean, in theory i could have went for divider 3 and increase the bclk, but for some reason it didnt work. Why?
post #27 of 34
Quote:
Originally Posted by dv986 View Post
Oh wow, with turbo mode I managed to go higher

But now that I'm testing it with prime, cpu-z suddenly shows that muliplier dropped to x21. Why is that?

And also, why was I not able to use x21? I mean, in theory i could have went for divider 3 and increase the bclk, but for some reason it didnt work. Why?
Higher BCLK is not always stable with or without a good VTT voltage. I have my BCLK at 170 and I can pull a good 4.1GHz out of my i7 with only 1.27v, but my chip is seemingly above-average.
 
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post #28 of 34
Quote:
Originally Posted by dv986 View Post
Oh wow, with turbo mode I managed to go higher

But now that I'm testing it with prime, cpu-z suddenly shows that muliplier dropped to x21. Why is that?

And also, why was I not able to use x21? I mean, in theory i could have went for divider 3 and increase the bclk, but for some reason it didnt work. Why?
So you just enabled "turbo" mode and it booted? And is now stable?
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post #29 of 34
Thread Starter 
What about this multiplier drop during stress test? why did that happen?
post #30 of 34
Thread Starter 
Quote:
Originally Posted by norcaljason View Post
So you just enabled "turbo" mode and it booted? And is now stable?
So far it is. I'm still testing it, but I stopped testing when I realized that multiplier dropped on its own, and set the freq to 3,9. Now I'm first trying to figure out why is that, lol
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