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WOOHOO!! Got ATI + Geforce PhysX working in Win7!!!

T

thilanliyan

Lifer
Credit to Rajkosto at Overclock.net
http://www.overclock.net/graph...ard-2.html#post5537665

I've tested it in Win 7 32-bit build 7000 with Fluidmark, Metal Knight Zero, and the Cryostasis Tech Demo and they all work. I'm using a 8800GT for the PhysX and I actually installed the ATI 9.1 Vista driver to make sure rendering is fine on the 4870 but used the Windows Update method as described in the guide for the Geforce driver.

Haven't tested in Mirror's Edge.

EDIT: Tested Mirror's Edge and that seems to work too!!! 🙂

From looking at the temperature for my 8800GT during gaming...PhysX doesn't seem to stress the card too much (and this time I can actually tell PhysX is working).

EDIT: I underclocked my 8800GT from 650/1650/950 to 400/1200/800 and it made almost no impact (~1fps) on PhysX performance so I think I'll keep it underclocked.

The most annoying thing is the extended display...I wish you could just have a duplicated display because for me in Cryostasis, it keeps trying to play on the 2nd monitor (which doesn't exist in my case).
 
Thanks... I'll be needing this next week. Only thing I'm curious about is whether or not it will work in 64-bit. You rock!
 
Cool! This will mean we can buy one of those cheap $25 nvidia cards, maybe used or something on ebay, and get an ATI for the main graphics stuff.
 
Originally posted by: soccerballtux
Cool! This will mean we can buy one of those cheap $25 nvidia cards, maybe used or something on ebay, and get an ATI for the main graphics stuff.
Click to expand...

The only thing that would be better is if NVIDIA starts making PCIe 1x cards with a decent chip on it so we don't have to waste our 16x slots. 🙂
 
What nVidia cards can utilize PhysX in this manner? I have an old 6600 non-GT in PCI-E form. Would that work?
 
it will not modular. only cards with stream processors (aka, DX10 capable) can use physX. Which means the nvidia geforce 8 series and above.
 
Originally posted by: Modular
What nVidia cards can utilize PhysX in this manner? I have an old 6600 non-GT in PCI-E form. Would that work?
Click to expand...

Only Gefore 8 and up unfortunately. You don't need a very powerful card though so a cheap 8/9 series card would do.

EDIT: Taltamir beat me to it.
 
One has to wonder how long before nvidia clamps down on this like they did with ALi and the SLI escapade. Though if they were smart, like I said, they'd start selling PCIe 1x "PhysX" GPU's for some added $$$.
 
Originally posted by: SunnyD
One has to wonder how long before nvidia clamps down on this like they did with ALi and the SLI escapade. Though if they were smart, like I said, they'd start selling PCIe 1x "PhysX" GPU's for some added $$$.
Click to expand...

NVIDIA doesn't really have any problem with ATI implementing PhysX in their cards and they have even tried ATI to get on the Physx board as well as helped at least one developer port the API.

I guess they won't be bothered by this 🙂
 
just wondering, does using a 512mb 8800GT for PhysX over a 256mb 8xxx or something similar mean better performance and/or serious overkill?!
 
Originally posted by: fijianalky86
just wondering, does using a 512mb 8800GT for PhysX over a 256mb 8xxx or something similar mean better performance and/or serious overkill?!
Click to expand...

It won't make a difference I believe.
 
Doesn't work right with my Windows 7 64bit.

UT3 had no hail, but the map played fine FPS wise.
Cryostasis TechDemo didn't want to open on the ATi display.
MKZBenchmark didn't open correctly on the display.
 
Originally posted by: SSChevy2001
Doesn't work right with my Windows 7 64bit.

UT3 had no hail, but the map played fine FPS wise.
Cryostasis TechDemo didn't want to open on the ATi display.
MKZBenchmark didn't open correctly on the display.
Click to expand...

Yeah I started getting the same thing with it not opening in the correct display (although it wasn't doing it when I first got it working). I set the Win7 display/resolution settings back to default and installed CCC and enabled the 2nd display that way and it's back to normal now. I have CCC and ATT both running right now and everything's fine.

As for UT3 you might have to replace some of those Physx dlls like in the guide...Mirror's Edge worked like that for me.

EDIT:
Cryostasis is doing the same thing again. Mirror's Edge and Fluidmark seem to be fine though.
 
It's definitely working, though I had to install the latest ATI drivers for OpenGL support.

FluidMark with GPU = min 35fps
FluidMark without GPU = min 5fps.
 
Originally posted by: SunnyD
It's definitely working, though I had to install the latest ATI drivers for OpenGL support.

FluidMark with GPU = min 35fps
FluidMark without GPU = min 5fps.
Click to expand...

Yeah I got it working fine in Win7 64 with the 9.1 drivers as well. However, FC2 and Warhead don't work with the desktop extended to the nV card so I have to run those games without the extended desktop which is fine since they don't use PhysX anyway. However, Cryostasis demo still doesn't work properly. Fluidmark won't run properly in fullscreen mode (it's running but flashes like crazy) but works in windowed mode. Mirror's Edge works perfectly.
 
Originally posted by: thilan29
Originally posted by: josh6079
This is good news to hear.

Thanks for the notice thilan.
Click to expand...

NP. We all have more choice now (assuming it works in retail Win7). 🙂
Click to expand...

It will work in retail Win7.

The only reason you can't do it in Vista is that WDDM 1.0 doesn't support heterogeneous display drivers on the same system. Windows 7 introduces WDDM 1.1 which fixes this, along with a few other things.
 
Originally posted by: aka1nas
The only reason you can't do it in Vista is that WDDM 1.0 doesn't support heterogeneous display drivers on the same system. Windows 7 introduces WDDM 1.1 which fixes this, along with a few other things.
Click to expand...

Hopefully it isn't artificially limited by any of the companies involved.
 
Originally posted by: zagood
For anyone looking at uber-cheap nV cards to pair up for physx, look at some benchmarks. I assume they'll be similar using an ATi card as your main one.

http://www.pcgameshardware.com...nchmark_review/?page=2

http://www.pcgameshardware.com...ative_to_Nvidia_Physx/
Click to expand...

Hmm...8400 seems really slow...maybe a 8600GT or maybe even 9600GT is the minimum? I'm surprised it's that slow though...I have my 8800GT underclocked to 400/1200/800, it made no difference from when it was at 650/1600/950 and it doesn't heat up at all while doing any PhysX so I figured the PhysX calculations required very little horsepower.
 
The PhysX card proved to be even faster than the 9600GT, so I guess that the minimum should be a 8800GT or better. Probably the new single slot 9800GT can fit nicely there.
 
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