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i7 860 overclocking help - Page 2

post #11 of 18
Still need your stock RAM specs (speed and voltage) before I can help with your RAM issue. Maybe a CPU-Z SPD tab and/or a link to your specific RAM. It looks like 1066MHz at 7-7-7-20, but I'd like to be sure.

To lock in a Turbo multiplier (22), try enabling Turbo Boost. I have to do that on my Gigabyte board to use the Turbo multiplier.
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post #12 of 18
i recommend you use this forums search function and search for lynnfield overclocking guide. i think you need to read a basic overclocking guide first. i know that several lynnfield guides have been done, as i ended up reading a few of them when i first got started and they were extremely helpful.

but if you just jump in without knowing what you are doing you are setting yourself up to fail.

research first, then experiment.

edit: and dont overclock with your turbo enabled. this is why it is so important to read first. the 860 has a max multi of x21. with turbo enabled x22.
Edited by AliceInChains - 2/28/11 at 11:32pm
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post #13 of 18
Quote:
Originally Posted by MattNo5ss View Post
[...] Your board may not even support locking in Turbo multipliers though.
I think you're correct. OP has a Gigabyte board, my old Gigabyte board (P55a-UD3P) also did not support turbo multiplier locking.
    
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post #14 of 18
My H55N can lock in Turbo multipliers when Turbo is enabled in the BIOS, so at least one Giga board can lock them in. The bad thing about having Turbo enabled while OCing is that when only one core is being used the Turbo multi on that core is a few higher than the +1 Turbo multiplier. Which means one core could be running at a lot faster than the BIOS reads and your voltage settings need to compensate for that or you could encounter instability.

So, for 24/7 OCing, not using the Turbo multiplier is more stable. For benching though, anything goes
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post #15 of 18
Thread Starter 
well guys i got it to 3.60ghz but it was so unstable,i put the vcore to 1.38 and the bclk to 170 multiplier 20x (i think thats how i had it,im too tired) i had turbo off eist off c1e off and the other ones (i think they were c3 and c6 or something) anways it was getting really hot too nearly 90c im gonna get a better cooler eventually but i still gotta do some reading on overclock these chips,ive been on 775 far too long and when i decided to upgrade to 1156 i knew pretty much nothing about overclocking them,anywayz thanks guys,and if u have any tips plz let me know
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post #16 of 18
You may want to try lowering the multiplier to find your max bclk or whatever bclk you want to get to first. Set the CPU multiplier on something low like 12 and start increasing bclk in small increments and doing a short stress between increments. When you come to instability, then you need to increase the Vtt voltage to find stability. Vtt is the voltage setting for bclk stability, and vcore is for overall CPU speed stability. So, find stability at the bclk you want, that will tell you what Vtt you need. Once you have the bclk stable, then start increasing the CPU multiplier in increments and increase vcore when you come to instability.

The process for OCing the newer CPUs isn't that much different from 775, it's just that you have two CPU voltage settings you need to play with instead of just vcore on 775. Vtt is kind of like NB voltage on 775.

Miah's guide is pretty good, and I think he has more in-depth guides for the 1366/1156 CPUs on TechReaction.
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post #17 of 18
Thread Starter 
Quote:
Originally Posted by MattNo5ss View Post
You may want to try lowering the multiplier to find your max bclk or whatever bclk you want to get to first. Set the CPU multiplier on something low like 12 and start increasing bclk in small increments and doing a short stress between increments. When you come to instability, then you need to increase the Vtt voltage to find stability. Vtt is the voltage setting for bclk stability, and vcore is for overall CPU speed stability. So, find stability at the bclk you want, that will tell you what Vtt you need. Once you have the bclk stable, then start increasing the CPU multiplier in increments and increase vcore when you come to instability.

The process for OCing the newer CPUs isn't that much different from 775, it's just that you have two CPU voltage settings you need to play with instead of just vcore on 775. Vtt is kind of like NB voltage on 775.

Miah's guide is pretty good, and I think he has more in-depth guides for the 1366/1156 CPUs on TechReaction.
see when i overclocked my e8500 i never touched the voltage coz im scared if i fry my cpu or board,i dont really have much money to go buying a new chip or mobo,i dont really know much about voltage,wat is the max voltage that is safe for i7 860's?
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post #18 of 18
Max vcore and max Vtt are both 1.4v according to Intel's i7 800 and i5 700 datasheet. Also, Vtt should be no less than vDIMM - 0.5v or you run the possibility of damaging the IMC.
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