760 SLI which to use as main

[deckardb26354]

Hi,

I have 2x 760 in SLI.
One which the monitor is plugged into reaches 85 overclocked on load.
The second is my physx card and never goes above 65. Bare in mind the second one has more air flow as it does not have a gfx card below it like the first.

Should i make the bottom gfx my main and switch the top to physx?

Wouldnt that keep them both cooler?

Thanks.

 

[ak47jar3d]

Hi,

I have 2x 760 in SLI.
One which the monitor is plugged into reaches 85 overclocked on load.
The second is my physx card and never goes above 65. Bare in mind the second one has more air flow as it does not have a gfx card below it like the first.

Should i make the bottom gfx my main and switch the top to physx?

Wouldnt that keep them both cooler?

Thanks.

Heats travels up wards naturally, So yes it should distribute temperature to put hotter card on the top.

 

[Eximo]

Are you dedicating a card to PhysX or just having the second GPU handle it. If you dedicate a card, then it ONLY does PhysX which leaves your main GPU doing all the heavy lifting.

I have SLI GTX580 and I had to resort to liquid cooling to keep the top card from being starved of air.

 

[deckardb26354]

Yes im dedicating the bottom one to physx. Should i dedicate the top one to it and make the main one the bottom card?

When u say theres an option.... I was under the impression that the whole point of SLI is to dedicate a physx card..... Is it not?

 

[Eximo]

No, if you dedicate a card to PhysX, then the other card is doing all the graphics rendering alone.

If you let both cards do rendering you should get much better performance in games. You can either tell it which GPU to use for PhysX, but not dedicated, or let it manage itself.

The idea behind a dedicated PhysX card, which doesn't require SLI at all is only for those situations where you have a spare GPU or want to pair an expensive GPU with a lesser one.

You can always test it out to see which configuration gives you the best performance. But all those benchmarks are done with SLI enabled and not dedicating a card to PhysX (Which only applies to some games anyway)