Physx GPU considerations

I am considering getting a GT 520 (http://www.amazon.com/EVGA-GeForce-...ref=sr_1_4?s=pc&ie=UTF8&qid=1313506295&sr=1-4) to use as a physx card.

It doesn't look like it has an SLI connector. Is an SLI connector needed to have one card doing PhysX?

 

let me get this straight, you have GTX580 and you want to get GT520 for Physx?

if so, this is a bad idea...

i have GTX280AMP! and 9800GTX+ for Physx and i get like 0-0,1% of performance... with GTX280 i get same performance as with dedicated physx card. in my case 9800GTX+ is useless and all it does is consumes more power

 

I think you'd need something with at least 128 cores or something like that. A GT520 is too little i think. Something like a GT440 or GT450.

 

520 would be too weak for your 580, you'll lose performance.

Here's a test with Alice Madness Returns

Also physx cards don't need the sli bridge.

 

Terrible idea, if anything, it'll slow the computer down.

Just use the 580. It doesn't need anything else.

 

In Mafia2 or maybe other news games that use alot of the Nvidia physX you may need a dedicated physX card.

Adding a dedicated physX card isnt goin to skyrocket your FPS but will maintain you FPS to a good level while having the eyecandy enabled.

I just made a few test with physX, but my testing was about SLI, PhysX working WITH a SLI isnt good at all. Peeps that have a SLI may disable SLI and use the second GPU for PhysX. ( well ... in the case of Mafia2 )

To follow your GTX580, you hould not go too low, get a GT550 TI and youll have a great PhysX card.


Just for fun, there are my results.

Everything maxed, no Vsync. 1920x1080
GTX580 @ 825mhz
I7 920 @ 4ghz

No PhysX
Single : 64.5/63.8
SLI : 128.8/130.0

PhysX High
Single gpu Alone with PhysX : 43.3/46.7
Single with PhysX gpu#2 : 60.4/64.8
SLI with PhysX gpu#2: 52.4/55.4
SLI with PhysX gpu#1: 51.5/54.7


The only test i may do is a Single GPU with PhysX on this same GPU. Just to compare even more. Ill do it roght now, back with results in few min.


EDIT : Added results for single GPU with PhysX on the same GPU.

 

No need for a Physx GPU with a 580, it's powerful enough to handle it on it's own.

 

Allright, you've talked me out of it. Maybe i'll consider it again once they start developing games for the next generation of consoles.

 

Or improve the drivers ! Finally !

 

meh just get a second 580 instead.

 

Well, i would talk him out of that

Speaking out of my own experience. If you want to enjoy games without issues, stick with the fastest Single GPU Card wich he already has.