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Max safe voltage for a GTX 480 Twin Frozr 2?

post #1 of 7
Thread Starter 
Hey, I've searched for this but I never found any set answer. What is usually the max safe voltage for the card in the title running 24/7 under water? Thanks!

Also, if I'm maxing out at 1.138 does this mean I need to do a bios flash to unlock the voltage?
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post #2 of 7
its probably up around 1.5 as long as you keep the temp down..
post #3 of 7
The vrm is more important than core. If you cool the core its great but u will hit vrm temps wall. And pushing things much can blow something up. So cool that area.
If your talking full-cover well its a different story.
1.5 is high...thats close to what ln2-ers use. 1.3-1.4 max under water.
Remember the actual volt is higher than what you see on your desktop.

Edit: About volts... Your card and to some extent my card handle more volts but msi locked it in the afterburner and not bios. So you need to find the afterburner voltage unlock. It will help you up the volts as much as you want.
Edited by MoBeeJ - 2/8/11 at 11:57am
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post #4 of 7
Quote:
Originally Posted by MoBeeJ View Post
The vrm is more important than core. If you cool the core its great but u will hit vrm temps wall. And pushing things much can blow something up. So cool that area.
If your talking full-cover well its a different story.
1.5 is high...thats close to what ln2-ers use. 1.3-1.4 max under water.
Remember the actual volt is higher than what you see on your desktop.
^^ exactly. If you set 1.2V in AB it is probably loading closer to 1.3V, just go slowly on the voltage increases, you will hit a point where adding voltage just makes it crash faster. After that it will need better cooling yet to keep raising the clocks.
    
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post #5 of 7
Thread Starter 
What can I do to keep an eye on the VRM? For now I don't have to full cover cooling system, I just left the black framing that was on the card.
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Blue Giant
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post #6 of 7
Yea thats what i thought. Well put a fan to blow on them. Sadly there is no way to observe their temps unless u have a thermometer.
How high do you want to go? And what is your oc on current volts??
The bottleneck
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The bottleneck
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post #7 of 7
Thread Starter 
I can do 800 or so at 1.138 which is good enough for me 24/7 for now, until I was to spend another $36 on the cooling attachment for the MCW80. Unless there is something else I could do for the VRM to cool them better.

I think the black parts on the twin frozr 2 are just plastic, but I can't tell what was cooling the vrm under the stock cooler as nothing was contacting the vrm other than the black part which is still attached.
Blue Giant
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