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post #21 of 24
You generally want at least half or better of your primary GPU solution to have benefits from physx
    
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post #22 of 24
Quote:
Originally Posted by Image132 View Post

I know this has been asked so many times but there doesn't seem to be an answer or all the threads are from 2010. There also seems to be very few articles on what is needed to run physx or information on the topic.

I've currently got a 780 and playing borderlands 2 with physx on anything but low with 3 or more people becomes impossible. I've had 15fps at times :/

So I'm curious as to what is the best card to buy to go along with my 780 to just do physx or should I just not bother? I have been looking at a 2gb Gainward GeForce GT 630 would that be good enough?

i'm gunna toss my 2 cents into this.

currently running a 780ti and a 580 for dedi physx (don't wanna hear it, its my old card)

using fluidmark 1.5.2 you are able to benchmark physx capabilities (to have the benchmark run only on your main card for referance you need to disable your dedi physx gpu, as it will force dedi physx if it detects an available non sli'd gpu capable of physx)

with dedicated physx, your fps is more stable (1440p +1080p tested) and 5-15fps higher.

IN BL2 with everything maxed @ 1440p (can't remember if ambient occultion is on or not) I get the frame rate stability with a dedicated card, and only about +2-5 frames on the average but +30 frames on the min. apposed to running physx on the main card.

I'm considering a 750ti to replace the hog of a gtx 580 and am thinking i will get better physx performance (more faster cores + faster memory) the PNY overclocked one looks nuts 1200/6008 if the store website can be trusted (canadacomputers, not some random site)
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post #23 of 24
In BL2 my 560ti never drops below 60fps at 1080P with everything turned on (included PhysX)

When I enable SLI, my fps doesn't drop below 100fps.

You don't have your CPU set to calc the PhysX do you?
post #24 of 24
Having gone down the rat hole of dedicated PhysX cards, I would only recommend a used card or going SLI on the primary.
There simply are not enough games to make a dedicated card worth it, but SLI will be useful for almost all games.
The Metro series has PhysX, but sli will definitely help those games more.

I realize that is a lot more money.

Cheers

Someone said to check your settings - I agree if you accidentally have the cpu handling PhysX you will get huge slow downs.
http://www.geforce.com/whats-new/articles/borderlands-2-physx
Having cruised a ton of forums over the years you are only going to find an endless stream of contradicting test scores, etc., about what will work. Good luck
Edited by Fan o' water - 4/21/14 at 6:19pm
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