It depends, if you mean running PhysX at High, then you would be better leaving it on Auto which will set it to load-balance on your GPU between graphics and PhysX. So if I am running 1 480, would it be better to set my PhysX to GPU in the Nvidia control panel or allow my system to auto select? Does the auto select function mean that it could bounce back and forth from CPU to GPU? Its really no different than going into a game like Company of Heroes and next to the Physics slider, reducing or increasing its setting. So yes, you get the "same" effects, just much less of it at much lower quality. In the case of the CPU, you can see it handles the baseline effects well, it just doesn't do a very good job of doing more than that.
#Mafia 2 demo standalone code#
Its all the same code though, it just ends up being accelerated on whatever hardware you decide. Yeah that's the whole point of Apex PhysX, it sets a base effect that can run on the CPU that is scalable and adds additional effects with more powerful hardware. So to me the only real Nvidia Physx features in this game are the debri build ups on the ground. Mirror's Edge won't get any of those effects with out a Nvidia Card. You don't get any of those effects without a Nvidia Card. I just always assumed games that use Nvidia Physx had to have a Nvidia card to exp it. Cause from what I heard ATI can still turn APEX to high. So no major difference just some extra debri build up for Nvidia cards.
If you're getting poor results in SLI, may want to try splitting them up and running 1xgraphics and 1xPhysX and see if results aren't better overall. Still, the game is very playable at mostly 30+ regardless, and most of the game isn't as PhysX intensive as the benchmark so I don't know how worthwhile it would be to get a dedicated PPU. If any Tri-SLI 480 users out there could test with 2x480 for graphics and 1x480 for PhysX that would be a pretty cool test I think. You can see the dedicated set-up actually runs with higher FPS, I imagine a fast dedicated PPU (GTX 260 or better) with SLI set-up would be required to really push FPS up into the 60+ range with Apex set to High. GTX 480 SLI (Graphics and PhysX load balanced) Actually running dedicated PhysX resulted in much higher GPU utilization on the 1st card (near 100% most of the run) with the dedicated PhysX card hitting 40-60% GPU utilization, which is pretty impressive.ġxGTX 480 Graphics + 1x480 PhysX (dedicated) OK so I ran with SLI and with 1x480 for graphics and 1x480 for dedicated PhysX and found some interesting results. But you can clearly see while they do get some effects and destructable environments, the advanced GPU PhysX offer a lot more debris, explosions, particles etc in this fine video from Zogrim comparing the two versions:
#Mafia 2 demo standalone software#
The fact those ATI users weren't able to tell they were missing out on features is just a testament to how good software PhysX is nowadays. PhysX runs in software/CPU too, always has, the advanced Apex PhysX effects do require a GPU or they run too slow on the CPU. People with ATI cards have the same effects and can enable it. Seems like Physx does not require Nvidia in this game or demo. During the benchmark, the dedicated PhysX 480 actually hit up to 60% usage!!! Basically in PhysX intensive sequences with Apex High, you are going to be PhysX-limited, which is going to limit your GPU FPS. But if you're not playing in 3D, results are MUCH better if you don't run in SLI, but run with 1x480 for graphics and 1x480 for dedicated PhysX. There's some interesting results, I'll post up some benches in a sec but generally, the game is playable 30+ FPS almost entire time even in 3D Vision with SLI + Apex High. Chizow how your fps with SLI? I'm still debating if i want to though another gtx 480 into my case.
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