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750i FTW: Max safe NB voltage?

post #1 of 15
Thread Starter 
Just curious if any harm will be done if I run in a red colored voltage to the SPP (northbridge) for 24/7 use.

I am asking this because the voltage colors turn red at lower values on the 750i FTW than they did on the 780i.

For example 1.4v to the SPP on the 780i is still green, while on the 750i FTW it is red.
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post #2 of 15
Thread Starter 
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post #3 of 15
Thread Starter 
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post #4 of 15
1.4 is perfectly fine.
post #5 of 15
Sorry to bump this thread, but what about 1.5v? Is that still safe?
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post #6 of 15
1.5 is pretty high, most people I have seen can hit 1800 QDR with 1.4 easy, past that this board (as well as many 7 series) is pretty shakey.

I would keep a close eye if you need 1.5, I know the guys over at evga forums claim you shouldnt even need 1.4, and if you look on the 750i thread in my sig PizzaMan has a good guide on tweaking the GTL lanes in oreder to lower the FSB voltages...

Hope this helps...
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post #7 of 15
My old 750i FTW ran fine for around a year at 1.5-1.55v

As 10acjed said though, shouldn't really need that much..
post #8 of 15
I think I run mine at 1.4. I had to run 1.5 to get a stable 4.0 though so lately I've backed it down to 3.82Ghz. (45nm)
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post #9 of 15
Quote:
Originally Posted by SLI_Maniac View Post
I think I run mine at 1.4. I had to run 1.5 to get a stable 4.0 though so lately I've backed it down to 3.82Ghz. (45nm)
Alright, could you tell me your settings for 3.82GHz for your Q9550? I'd like to match it and see if I can get stable . Thanks!
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post #10 of 15
Quote:
Originally Posted by metallicamaster3 View Post
Alright, could you tell me your settings for 3.82GHz for your Q9550? I'd like to match it and see if I can get stable . Thanks!
Sure I'll get that info for you when I get off work.

EDIT: By the way, tweaking GTL lanes did nothing for me when trying to lower my FSB voltage. As soon as I got them dialed in, I lowered the voltage and I was no longer IBT stable. I know other people have seen advantages in tweaking GTL lanes but I find mine runs most stable at auto now.
Edited by SLI_Maniac - 12/2/09 at 6:27am
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