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Is it safe to go 1.70 DDR Voltage on SB?

post #1 of 15
Thread Starter 
I was just barely able to get IBT 15 pass stable on my stock settings, but at 1.70v. Is that safe? I'm perfectly fine going back to 1.50v and DDR-1333.
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post #2 of 15
Yes, if you look at your manual, you should see a few 1.7 volt kits. Or at least that is what I saw on the online versions.
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post #3 of 15
AFAIK 1.70 is safe but that's about it. Any higher and the risks would escalate.
post #4 of 15
Data sheets says max is 1.575. 1.7 is a too far imo
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post #5 of 15
90% of the ram on all sb motherboards compatability list is 1.65 volts dont worry about going over 1.575 for sure, but I am not sure about 1.7, I am guessing it would be fine
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post #6 of 15
Thread Starter 
Alright, hopefully it's good. just passed 13 passes of memtest. now all I need to do is he k if my RAM is actually running at DDR1600 -_-
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post #7 of 15
I've run some Mushkin ram at 1.85/1.9v fine...but only for about a week, so I'm not sure what the long term affects are...but technically it does work without any issues.
post #8 of 15
@NinjaRicer

Safe

It seems that the same rule applies for the SB as for the Nehalem, it´s not recommended to have more then 0,5v between the IMC and the DRAM.

If I´m not misstaken, the SB IMC (VCCIO) runs at ~1,05v, so 1,55v should be max to be on the "safe" side, so if you want to run your ram at 1,70 you need to rise the VCCIO to 1,20v.

You should be aware of that you probably going to be on the fringes of acceptable longterm reliability if you have 0,5v between the IMC and the DRAM, it should be lower for a longterm reliability.
Edited by Ghostleader - 2/5/11 at 12:29am
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post #9 of 15
Thread Starter 
Quote:
Originally Posted by Ghostleader View Post
@NinjaRicer

Safe

It seems that the same rule applies for the SB as for the Nehalem, it´s not recommended to have more then 0,5v between the IMC and the DRAM.

If I´m not misstaken, the SB IMC (VCCIO) runs at ~1,05v, so 1,55v should be max to be on the "safe" side, so if you want to run your ram at 1,70 you need to rise the VCCIO to 1,20v.

You should be aware of that you probably going to be on the fringes of acceptable longterm reliability if you have 0,5v between the IMC and the DRAM, it should be lower for a longterm reliability.
Thanks for that info. Hm, looks like I'm dropping down to 1333 MHz -_-. Wonderful. BIOS updates, please, kick in soon.
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post #10 of 15
Quote:
Originally Posted by Ghostleader View Post
@NinjaRicer

Safe

It seems that the same rule applies for the SB as for the Nehalem, it´s not recommended to have more then 0,5v between the IMC and the DRAM.

If I´m not misstaken, the SB IMC (VCCIO) runs at ~1,05v, so 1,55v should be max to be on the "safe" side, so if you want to run your ram at 1,70 you need to rise the VCCIO to 1,20v.

You should be aware of that you probably going to be on the fringes of acceptable longterm reliability if you have 0,5v between the IMC and the DRAM, it should be lower for a longterm reliability.
If that is true then that is really dumb, because most kits I see on Newegg are 1.6+ so how in the world does Intel expect you to run at 1.55 if you can't even get a kit that runs at that voltage?

Sure you could get a 1333 kit at that voltage but who wants to run 1333?

All the good kits, like 1866 above are over that spec by a long shot... with the exception of this one. That is the only current 4GB kit of 1866 on Newegg that is under 1.55v.
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