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Ph...Physx?!

 
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post #1 of 4 (permalink) Old 03-02-2019, 01:11 AM - Thread Starter
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Ph...Physx?!

So Finally pulled the trigger and got a Water cool block and back plate with an RTX 2080 Ti Fe.

Now I'll have three GTX 580's that I can sell store or use. Could I use one as a Physx card? Is it even worth the trouble?


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post #2 of 4 (permalink) Old 03-02-2019, 02:30 PM
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In the Metro Last Light benchmark using a GTX 780 dedicated to PhysX w/a GTX 980Ti and then a 980Ti dedicated to PhysX w/my 1080Ti it never made much of a difference. When I dedicated the 980Ti to PhysX along w/the 1080Ti I saw a 14% peak load and 169 MiB of VRAM utilization on the 980Ti. Maybe Batman: Arkham City or Borderlands 2 or Fallout 4 or Killing Floor 2 might see more of a difference. Someone here did say he saw a diff w/a dedicated physX GPU in Fallout 4. I never really bothered to do any more testing after seeing the disappointing results w/Metro Last Light. The interesting thing is that if you set PhysX to auto you get slightly different results than if you set PhysX to GPU.

If you can it would be great if you could do some testing on your own. I'd suggest two benchmarks w/one of your 580's installed:

1. PhysX set to CPU
2. PhysX set to GPU
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post #3 of 4 (permalink) Old 03-02-2019, 02:46 PM
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The 580 would just bottleneck the 2080ti. You would need something faster like a 1660ti? I tested a gtx 680 with my titan xm a while ago and the 680 bottlenecked the titan xm. It was faster to have the titan do all the work. Also tested a 1060 6gb with my titan xm. And the gains where in the single digits averaged about 3fps. That was with batman... There just isn't enough Physx games to make it worth the price.

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post #4 of 4 (permalink) Old 03-05-2019, 07:32 AM
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Quote: Originally Posted by ozlay View Post
The 580 would just bottleneck the 2080ti. You would need something faster like a 1660ti? I tested a gtx 680 with my titan xm a while ago and the 680 bottlenecked the titan xm. It was faster to have the titan do all the work. Also tested a 1060 6gb with my titan xm. And the gains where in the single digits averaged about 3fps. That was with batman... There just isn't enough Physx games to make it worth the price. [IMG class=inlineimg]/forum/images/smilies/smile.gif[/IMG]
I was told some years back here and seemingly the consensus was that a card just for physx showed no improvement unless the card was at least 50 percent as effective ad the main card and even then it was marginal at best....I rarely see physx used these days

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