@Truth_Hurts_U said:
@04dcarraher:
lol yes, you do... Even with my GTX 690 (which is now sold since June) putting in a dedicated PhysX card increased my frames 10-20 FPS and got rid of large FPS dips and stutter. Lot of research too went into choosing the right card. PhysX doesn't like boost mode and my card doesn't have boost. PhysX loves high clock speeds.
I love tweaking my PhysX settings too cranking them way up in the game files.
No longer will I be doing SLI again. To much hassle, 1 powerful GPU with dedicated PhysX is what I am gearing towards.
Here is some videos a guy did with a GTX 970 and a dedicated PhysX card.
https://www.youtube.com/watch?v=Sc9Sw47KzJA
https://www.youtube.com/watch?v=ufvjFJSXQJs
No you dont need one.... you using the GTX 690 as proof..... its a dual gpu card.... as with most dual gpu cards they all have issues of some sort, SLI'ing separate cards isnt a real issue. I too have used and tried multiple combos with Physx as well. Ive used 8800GT's in SLI disabling one just for physx work helped a great deal, then with GTX 560 with a 8800GT as a ppu helped but not a massive difference. Even with a GTX 760 and a dedicated GTX 560 for physx the difference was even smaller almost not worth it. As long as you have a single gpu that is not low-midranged it can handle physx pretty well.
With average frame rates a dedicated gpu for physx is minor, and in some cases having a dedicated physx card with high end card/s can hurt performance... Batman Origins for example with SLI Titans and Physx
SLI:48 min fps, avg 78 fps
SLI+GTX 650: 39 min fps, avg 66 fps
Titan + Titan : 61 min fps,avg 94 fps
Titan +GTX 650: 39 min fps, avg 62 fps
Titan: 38 min fps, avg 66 fps.
Those examples with the 970 with a dedicated ppu is not 100% proof because Mafia 2 is a older game is not demanding on the gpu, the gpu usage hovers around 50% the whole time with the 970 with physx. Batman AC if you look the minimum fps is lower with dedicated, but only adds 11% gain to fps average.
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