PDA

View Full Version : GTLVref


srpeters18
02-14-2008, 05:14 PM
Anybody had any experience with GTLVref? I read a few articles on it today and am actually a little surprised at the results thus far. After increasing my overclock I couldn't get past the RAID detection, so I increased the Vcore. That got to the Windows load screen but no further. Instead of increasing the Vcore more, I set the GTLVref manually. Got farther into the boot screens. Increased it some more and I'm currently running prime95. So far so good. And because I didn't have to increase the Vcore more, my temps are still the same. Hmm. Going to have to see just where this can take me!

1706FSB
426x8 = 3413 MHz

werty316
02-14-2008, 09:29 PM
Did any of your board temperatures change?

If this makes any sense to you:

GTLVREF is used to adjust the input sample trigger point on Intel CPUS. Adjustments to this value can compensate for voltage drops that occur for some loading and traces. For example, GTLVREF can be lowered to account for voltage drops when tuning a Kentsfield CPU instead of a Conroe CPU.

Source: http://guru3d.com/article/mainboard/482/9/

'Amp!'
02-14-2008, 09:34 PM
Did any of the board temperatures change?

Exactly. Something somewhere got hotter.

tyle6
02-14-2008, 09:48 PM
From what i undertand it would be the CPU that got hotter from increased GTLVREF?
From what i understand this is basically a more precise way of tuning CPU voltage. correct me if im wrong.

srpeters18
02-15-2008, 08:13 AM
I read the article you quoted and one other, both were a little technical for me, and I'm not a dumb person. The other article I read, and I don't feel like searching the history for the link right now, described it as more of a way to get the FSB to run stable at different speeds. You know how everybody talks about FSB holes? Well it said that the GTLVref was a way to basically fix the holes. And they are such small voltages that it really hasn't affected any of the temperatures on the board. I'm up to +25/+55/+25/+55 and that's all in mv. The Vdroop hasn't changed at all, still getting the same idle/load voltages that I was before, just getting more stability out of it.

I tried lowering the second and fourth numbers to +30 and it wouldn't boot to Windows. Raised it to 60 and it locked up after about 10 hours. +70 lasted for about 4 minutes. Right now I'm back to +55 and so far so good. Also, according to the other article, different FSB's will work better with different levels. So this one may not work well with a higher or lower FSB.

I really need to get that engineering degree so I can actually read this stuff and have an idea of what they're talking about!