My first post, woot! Using SLI for PhysX???

luke318is

Honorable
Dec 3, 2013
29
0
10,540
Hello folks!

First off, here is my current build:

http://pcpartpicker.com/user/luke318is/saved/2W9y

I have a gtx 680, and i have a spare gtx 460 kicking around.

My question is this: I heard someone say they use an Evga GTX 680 with an EVGA GTX 460 for PhysX processing

Can someone explain this to me? I didnt know you can SLI two different model cards. How do i do this? Does this put all the physx processing onto the 460? How do i tell the 460 to only handle physx processing?


Thanks for your time!!!
 

legendkiller

Distinguished
Jun 19, 2011
1,812
0
19,960
You CANT SLI different architecture, BUT you can plug those two cards into the same machine and use one of them as main and one for PhysX. Basically GTx 680 main and 460 as PHYSX processing, it can be set via Nvidia control panel in column "set PhysX Configuration"
That guide says that it uses 2 or 3 same cards and set one of them as PhysX processing(read like a paragraph :p)
 

luke318is

Honorable
Dec 3, 2013
29
0
10,540


do i just plug them or do i also need the SLI cable installed?
 

legendkiller

Distinguished
Jun 19, 2011
1,812
0
19,960


Yes you can plug them and run them at the same time BUT NO SLI... SLI different card will not ruin your rig but will cause problems... Here's an example, just note that you wont be able to SLI...
http://www.youtube.com/watch?v=cbww3dhzK0M
 

oczdude8

Distinguished
its actually not really beneficial to do so. If you read some benchmarks online regarding this, you will see it can actually lower performance!

you 680 is already very fast and can easily handle PhysX better then a 460.
also very few games use PhysX. those games that do not gain absolutely nothing

if you are using PhysX for some other reason other then gaming, then that's a different story...

Edit: still since you have both cards, you should certainly give it a try!