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PhysX - Is it worth having a dedicated GPU for running it?

Combat squirrel said:
Incorrect iv seen comparisons done with older cards + titan x and just a titan x, and the lone titan x was just faster, perhaps the older cards were either unoptimized or the architecture etc, but the older cards seem to run slower than just the T-X now.....ill try to find the links.
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I remember seeing a test with a guy having 2 orig titans and when he swapped the 2nd titan out from doing physx to a crappy old card it bottlenecked the whole setup and the fps was worse than just running one titan doing the game and physx if i remember correctly. It seems there is a cut off point where a too crappy a gpu will mess everything up. I guess a gtx 970 with a titan x is ok but that kinda defeats the point usually as you only have normally an old gpu lying around from a few years or more back.
 
I had a GT240 as a dedicated Physx card along with my 7970. Worked really well for games like Borderlands 2 and Metro 2033/Last Light. The GT240 GPU %usage used to go up to 70/80 ish.
Since changing to Windows 8 I can't get the 'hybrid physx' to work anymore :(

Nvidia driver disables it when an AMD card is the main GFX card.
 
I am tempted to get a cheap and cheerful passive nvidia gpu to use alongside my Titan X for Physx. Unsure whether there is a cut-off point as to how powerful the physx cards needs to be.

Haven't ever used a dedicated physx card.
 
N19h7m4r3 said:
I'd be interested how something like a 750 handles it.
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750's are currently the sweet card for PhysX:

mainchart_fnl.jpg


pgi947 said:
Try borderlands 2 Greg, lots of physx going ons with that :)
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When I had SLI 970's BL2 actually ran smoother with SLI disabled and GPU2 running PhysX.
 
not sure if anyone has it, but it would be very interesting to see how a GTX980 rendering and a 960 doing physics compared to the titan X solo.

the 980 and 960 add up to a very similar transistor count, and identical shader counts as the titan. this would indicate how much overhead there is on the titan still with whatever context switches the gpu caches have to flush through when switching between rendering and physx code! (or can the Maxwell 2 now run multiple kernels on the core and load balance the sharers without loosing buffers?)

i have a 980, so anyone want to lend a 960 ill happilly test Batman and Border lands2 etc!

Dan
 
Kinda lol that people didn't know that lol.

It was also common to see expansion cards for hard drive/IO controllers, USB ports and sound cards before they became standard on motherboards.
 
Gregster said:
I will give that a play at some point Paul. Not seen you on MLG for a bit bud :(
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Literally been stuck at work mate, not had a day off in something like 20 days all 12-18 hour shifts :(

At least the OT will fund a new gpu :D
Should be back more regular on MLG in the next few weeks, not been on bf Wednesday's for months :(
 
pgi947 said:
Literally been stuck at work mate, not had a day off in something like 20 days all 12-18 hour shifts :(

At least the OT will fund a new gpu :D
Should be back more regular on MLG in the next few weeks, not been on bf Wednesday's for months :(
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I can understand that. Team MLG ranked 9th in the world now and even the big man 8 Pack has joined us :cool:
 
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