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1.8 Volts for my RAM? - Page 3

post #21 of 27
Quote:
Originally Posted by peck1234 View Post
Hrm, very interesting, thanks for the added feedback everyone.

Only question is WHY does the QPI need to be within 0.5v of the DRAM voltage?

What if its not and how does/can the damage occur.
It's just a thing with Intel chips. If you don't follow this important rule, you'll fry your IMC.

Computer will not boot up one day.
post #22 of 27
Thread Starter 
Ok, looks like im all set up now AND according to SPEC, how am I looking??

BTW CPU-Z is still only reporting 1.5V. (Also I lent 4 Gigs of Ram to A freind cause he had to RMA so ignore the 4G missing)

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post #23 of 27
If you are running the same timings and speed with 1.6v, then do that.

If you want to get lower timings and higher speed then try 1.8v

The less voltage used the better, which means less heat, power, and wear on your ram.
post #24 of 27
Quote:
Originally Posted by MrTOOSHORT View Post
If you are running the same timings and speed with 1.6v, then do that.

If you want to get lower timings and higher speed then try 1.8v

The less voltage used the better, which means less heat, power, and wear on your ram.
dont try 1.8
post #25 of 27
As a few others have said. Running X58 memory @ 1.8v is perfectly safe so long as the QPI voltage is >1.3v (To stay within 0.5v range).

However, I believe I read that a QPI voltage of 1.35v is the max you would want to go for safe 24/7 use (Intel spec). Which means in theory you could run 1.85v through your memory and 1.35v for QPI and still be safe for 24/7 use. Its once the QPI is required to exceed 1.35v that it can become a bit dangerous. And even then, you would probably be ok for 24/7 use up to 1.4 maybe even 1.45v QPI before any chip degredation occurs.

EDIT: See page 22 for proof of 1.35v QPI;

http://download.intel.com/design/pro...hts/320834.pdf

Its the VTTA and VTTD voltages you want to look at (AFAIK)
Edited by Vengeance47 - 7/31/11 at 10:55pm
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post #26 of 27
Why are you running 4 dims in a tri channel board?
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post #27 of 27
Like its been stated before....If you were stable with the right timings at 1.60v, there's no reason to go up to 1.80v, unless you're pushing those sticks harder.

Quote:
Originally Posted by spud84 View Post
Why are you running 4 dims in a tri channel board?
Why not? X58 is capable of dual channel too. There's literally maybe a 1-3% loss from tri to dual channel, and that's at 1600 with loose timings. When you speed them both up, they perform the same because the IMC becomes the slowest part then.
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