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Old 04-17-2013, 07:40 AM   #1
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Default How to Install and Configure a Dedicated PhysX Video Card

There has been a new article posted.

Title: How to Install and Configure a Dedicated PhysX Video Card
URL: http://www.hardwaresecrets.com/artic...ideo-Card/1763

Here is a snippet:
"When you buy a new video card that is different from your current video card, usually you have two options: sell the old video card or leave it collecting dust inside a closet. If your old video card ..."

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Old 04-17-2013, 07:59 AM   #2
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Just as a note, this only works with cards from the series GeForce 8 and up.
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Old 04-17-2013, 08:57 AM   #3
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Yes Geforce 8 and up but does it have to be the high end models or can it work with mid to low profile video cards?
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Old 04-17-2013, 09:11 AM   #4
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As in a GT210? Yes, it will run on that. although not necessarily that well.
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Old 04-17-2013, 09:30 AM   #5
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Thanks for the reminder!
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Old 04-17-2013, 09:45 AM   #6
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Tom's Hardware did an analysis a year or two ago; you want at least 96 CUDA cores (e.g. GT240) for even minimal improvement, otherwise the game has to wait on PhysX processing and actually slows down.
I believe this article will need a LOT more detail for getting PhysX to work if an AMD card is installed in the system; I believe some driver "games" are required, in fact I'm not even certain it works any more. Please elaborate.
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Old 04-17-2013, 10:14 AM   #7
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All versions of Forceware since some ridiculously old number (190.xx? Sorry, I don't have a chance to check right now) have arbitrarily disabled PhysX if an AMD GPU is present in the system.
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Old 04-17-2013, 10:24 AM   #8
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I remember years ago that you could do this with ATI cards...

but Nvidia "updated" their driver so you can't have ATI driver and Nvidia driver at same time...

I think you can still do this with AMD Radeon cards as graphics card and Nvidia cards as PhysX processor but it's very difficult at best...

Anyone remember dedicated PhysX cards by BFG? It was pretty good idea at the time till it was actually used and made games run slower?

good thing Nvidia makes card fast enough so you only see few percentage point drops in frame rate when PhysX is enabled...
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Old 04-17-2013, 01:28 PM   #9
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To answer the AMD Hybrid PhysX concerns, there was a "Mod" which enabled it. However, this project's development was halted in 2011. I had to dig through my old Firefox bookmark back-ups, but was able to find a link to it: http://www.ngohq.com/graphic-cards/1...3-v1-05ff.html

I suspect it should still work provided the proper/supported nVidia and PhysX drivers are used, but a caveat may exist: a modern (2011 or later) PhysX-enabled game installation would probably overwrite the PhysX version. Though, someone could probably use an older PhysX-enabled game, such as Mafia II (Aug. 2010), without concern.

If prodded, I'd consider testing whether or not this Hybrid PhysX Mod still works. I have a very recently-retired 8800GT lying around, and two AMD-based systems I could plug it into. One system has a brand-new HD7870, while the other has a 4-year old HD4890.

Admittedly, these systems are roughly 4-years old, so neither has an ideal CPU for comparison tests of dedicated GPU- vs CPU-enabled PhysX. But, both systems have an available X8 (790X Chipset) or X4 (785G Chipset) PCIe-16 slot. (The 790X + HD7870 system has an AMD PhII 720BE w/ 4th core enabled and a 3.2GHz OC, while the 785G + HD4890 system has an even older dual-core Athlon 7850 Black Edition OC'd to 3.2GHz.)

The only issue technically holding me back from testing is both the HD4890 and the 8800GT need replacement thermal pads for their VRAM modules. Some of the old pads tore last weekend when I removed their coolers for cleaning, and I've been enjoying the new HD7870 too much to worry about repairing these two cards.
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Old 04-17-2013, 04:15 PM   #10
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Quote:
Originally Posted by RazberyBandit View Post

If prodded, I'd consider testing whether or not this Hybrid PhysX Mod still works. I have a very recently-retired 8800GT lying around, and two AMD-based systems I could plug it into. One system has a brand-new HD7870, while the other has a 4-year old HD4890.

.
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