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post #151 of 926
Quote:
Originally Posted by chatch15117 View Post
Updated with overvoltage BIOS. Max is 1.2v now. Have fun - I'll update later with a modded 480 bios.
What voltage should I stop at when I am over volting my GPU?
Is 1.5v safe if the card is kept cool?
Edited by k4m1k4z3 - 5/11/10 at 12:59am
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post #152 of 926
Thread Starter 
No idea lol. I haven't gone past 1.175v on my card.
    
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post #153 of 926
I noticed you have a list of the 480 bios' on the first post, here's the Galaxy one (Don't know what use it will have, if any, but still).

http://rapidshare.com/files/386164322/GalaxyGTX480.bin
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post #154 of 926
Thread Starter 
This 470 is making me mad. It won't complete the vantage new calico run when I overvolt but it runs the other tests perfectly
    
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post #155 of 926
this a different card than before chatch
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post #156 of 926
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post #157 of 926
Anyone else with a 480 see a discrepancy in AB between requested and actual voltage?

For instance, requested/applied voltage is 1.05, but the AB graph reads 1.027v.
Right now my requested/applied voltage 1.0v, AB graph reads .974.

This is all happens under a 3d load.

EDIT> The more I experiment, the more this looks like vdroop.
Edited by grunion - 5/11/10 at 8:24pm
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post #158 of 926
Quote:
Originally Posted by chatch15117 View Post
This 470 is making me mad. It won't complete the vantage new calico run when I overvolt but it runs the other tests perfectly
Mmmmm I think for higher clocks you might need to go on water dude. I can get mine to 880/1038 with 1.125v, gaming stable but anything more and I need to keep my temps way down. The higher you overclock the lower you need to keep your temps for stability it seems.

At stock the cards can hit 100C and still work lol. But when overclocking 80C may be too much if you have a very high overclock.

I did a little mod for my card

I have 2 120MM fans blowing on the heat sink of my GTX 480. They are being held by cable ties

I also have another 120MM fan right on top of the heat pipes and this one is grabing the hot air and taking it out of the case.

This is a rather easy mod and it drops the temps by about 10C. These cards really need a very good ventilated case for a good overclock and water for extreme overclock.

Maybe give this a try if you got some high CFM/quite extra fans.

Quote:
Originally Posted by grunion View Post
Anyone else with a 480 see a discrepancy in AB between requested and actual voltage?

For instance, requested/applied voltage is 1.05, but the AB graph reads 1.027v.
Right now my requested/applied voltage 1.0v, AB graph reads .974.

This is all happens under a 3d load.

EDIT> The more I experiment, the more this looks like vdroop.
Yes.

I went back to beta 5. after 1.125v, the requested volatge does not apply but the voltage below the one requested. So to get 1.131, I had to choose 1.137 and for 1.137 I had to choocse 1.141 or whatever is next.
Edited by saulin - 5/11/10 at 10:58pm
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post #159 of 926
I thought i'd try and improve the temperatures I was getting with the MK-13's, I also took on board what what someone had pointed out, namely that the bottom card was bending. I replaced the standard heatsinks with some enzotech forged copper ones, used OCZ Freeze for the TIM and lastly changed the fans to 140mm Noiseblocker PK3s (1700rpm).



Before, load.



New setup temps.

Idle.



Load after 15mins of combuster.





Definitely not silent anymore but still quieter than stock cooling at load and a drop of 25c load, i'm very happy.
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post #160 of 926
Quote:
Originally Posted by grunion View Post
Anyone else with a 480 see a discrepancy in AB between requested and actual voltage?

For instance, requested/applied voltage is 1.05, but the AB graph reads 1.027v.
Right now my requested/applied voltage 1.0v, AB graph reads .974.

This is all happens under a 3d load.

EDIT> The more I experiment, the more this looks like vdroop.
Droop for sure..just make sure your droop isnt related to temp..and your good.
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