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480 backplate on a 580 - why not?

post #1 of 8
Thread Starter 
So I've got two 580's with DangerDen full cover blocks on them that sag a bit when they're in the 800D. I've got two 480 backplates, would putting them on the 580's be a mistake? Would it increase the card rigidity? The screws all line up correctly with the PCB, the only big difference I see between the 480 and 580 backplate is that the 580 backplate has an open space behind the GPU where the 480 has a thermal pad.
    
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post #2 of 8
The backplates are metal, well at least the ati ones are and id imagin the nvidia backplates would be the same, there for all it would take is for there to be a slight difference enough to touch a transistor and bye bye GTX580's
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post #3 of 8
remove the thermal pad?
post #4 of 8
Just make sure they don't touch the PCB, maybe use plastic washers?
 
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post #5 of 8
Quote:
Originally Posted by pmrballer123 View Post
remove the thermal pad?
This move could be counter-productive.

GTX480 is relatively hot and so the backplate has thermal pad as a means to transfer some heat off onto the plate.

GTX580 is relatively cooler and so the backplate just has an opening in that spot. An opening is used instead of having no opening so as to allow for some kind of natural convection.

So, if the thermal pad is removed and that spot is without an opening, the natural convection is prevented. It might not be critical but definitely not a better move.

However, if the thermal pad remains, it might just help further cooling the GTX580 GPU.
post #6 of 8
Thread Starter 
Seems to me there's really no reason it wouldn't work, then. Wonder why EVGA said it wouldn't.
    
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post #7 of 8
Quote:
Originally Posted by Supacasey View Post
Seems to me there's really no reason it wouldn't work, then. Wonder why EVGA said it wouldn't.
I do not have the plates but judging from the 2 pics below, their difference seems to be more than just that opening. Screws openings do not seem identical.

post #8 of 8
Thread Starter 
Indeed they aren't, but I think it's because the backplate itself needed the different placements, not the PCB. I compared the 480 backplate to the 580 PCB and everything lines up exactly.
    
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