Using an old card for physx

[yale0083]

I upgraded my GPU a little while back and my old one is just sitting in the packaging in a closet. I was thinking of throwing it back into my current system and using it as a dedicated physx processor. Would I get any benefit from doing this? I have my 980ti handling everything currently. My old card is a 750ti.  

[AlwaysFSX]

You'll lose performance. There's never a reason to get a dedicated PhysX card.

[yale0083]

Good to know. Thank you for the help. 

[jcw150]

I used a 670 as a PhysX card with my 980 ti and gained no performance.

[0ld_Chicken]

yeah not worth it.  I tried a lot of different configurations just for the fun of it and even with a 960 (main) and 580 (physx) I got no performance increase

[TheRandomness]

[Tytan64]

So why is there even such a feature?

[-rascal-]

21 minutes ago, Tytan64 said:

So why is there even such a feature?

And @yale0083 as well...

 

If the game supports heavy PhysX, then you should see a performance increase, since you are relieving some of the compute work from your main GPU to the PhysX GPU.

 

BUT if the PhySX GPU is significantly weaker than your primary GPU, then it will hold you back -- essentially a GPU 'bottleneck' caused by the PhysX card.

 

Ol' Linus himself did a PhysX experiment a few years back (2011). It may be a bit out-dated now, but the information there is still valid

 

 

[Coaxialgamer]

1 hour ago, yale0083 said:

I upgraded my GPU a little while back and my old one is just sitting in the packaging in a closet. I was thinking of throwing it back into my current system and using it as a dedicated physx processor. Would I get any benefit from doing this? I have my 980ti handling everything currently. My old card is a 750ti.  

When you said,  old card,  i thought you meant something like an 8800gt ( that would decrease performance),  but using a 750ti is more than enough for physx

[CapricaBuccaneers]

Since you're one of the 980Ti owners (hi-5) you're going to see 0 benefit. I tried it when I replaced my 680 with my first 980Ti and it didn't do anything.

 

Although the main point should be how few games actually use PhysX nowadays for it to be continued.

 

Take Warframe for example - they no longer use PhysX and instead some ugly particle blocky 1980s 8 bit effects instead. 

[Mick Naughty]

Ran both of my 980's in sli and threw in one of my titans and couldn't get a number change in anything, game or benchmark. But it did remind me of how bad open air coolers are.