PhysX + AMD ?

[Kazz]

why do i need to intall PhysX if i have AMD Card? It can not use it, can it ?

[UltrAramA]

If you install PhysX when you have a AMD graphics card the calculation is made on the cpu instead as i understand it.

I remeber when I had a AMD card and enabled PhysX in games, those games that allowed to enable this setting even if you had a AMD gfx card, the game would run would run horribly slow like Alice: Madness Returns.

[Kazz]

O_o i think it would set it on fire.

PhysX option is disabled in games.

[UltrAramA]

Hehe, well I think you won't notice much difference having PhysX disabled compared to a system with a Nvidia card when it comes to game play. Some games just needs to have PhysX installed even if you don't have a Nvidia card, just disable PhysX in the game setting if it can be changed.

You could always try to have it on and see what happens.

[Rove]

Your CPU will do the Physx instead of your GPU. That's why you need to install it.

[Master Zone]

Did AMD users know that they can have both a Nvidia and AMD card in their computer? Just buy a cheap GTX 580 or GTX 680 for less than $100 and use that as your PhysX card.

[The Grapist]

There used to be a way to run a physics card along side an AMD card.
Just google it. Back in the day, they used to have a thing called an "Ageia" physics card.
When Nvidia had physics, but they needed a seperate card to handle it.

[Bad 💀 Motha]

Which games though? Running AMD GPU on a PhysX game like any of the METRO series for example u will want to disable PhysX in-game options.

However yes if game requires PhysX and u have AMD GPU, u still need PhysX standalone software for those games to work.

[UltrAramA]

Ageia invented PhysX, Nvidia bought them. http://en.wikipedia.org/wiki/Ageia

[UltrAramA]

Originally posted by Bad-Motha:

Which games though? Running AMD GPU on a PhysX game like any of the METRO series for example u will want to disable PhysX in-game options.

However yes if game requires PhysX and u have AMD GPU, u still need PhysX standalone software for those games to work.

Most games hides/disables the setting for PhysX if you have a AMD graphics card. It was different with Alice: Madness Returns or at least when i had my AMD card, i could turn on PhysX but the game would run horribly slow and as it should with PhysX off.

As Rove says, your cpu will do the calculation instead.

[Bad 💀 Motha]

PhysX setting is still there, depends on the game. For Metro series for example, u have to disable PhysX in-game or they can quite poor performance on AMD GPUs when that is enabled. But in Assassins Creed 4: Black Flag, PhysX won't be an option on AMD GPU, or if u have NVIDIA GPU but have PhysX set to CPU.

Again, always review the game options, as each game differs.

[[☥] - CJ -]

Originally posted by Master Sweeper:

Did AMD users know that they can have both a Nvidia and AMD card in their computer? Just buy a cheap GTX 580 or GTX 680 for less than $100 and use that as your PhysX card.

NVIDIA blocked that a few years ago, a modified driver would be required to use both, IF they are still made.

[PyroPanda]

LOL this topic reminded me of the very first dedicated physics card from BFG. Can't believe I actually bought that too. Then Nvidia bought the rights to it and built it into their GPU's. I still have that old BFG card...


Damn I thought you could still use an old nvidia gpu with your ATI gpu, so long as it was dedicated to physics.

[[☥] - CJ -]

NVIDIA removed that (exploit) a few years ago in their drivers. Now only Modified drivers allows GPU mixing. Assuming drivers can still be modified for current GPUs.

And thats how it should be.

[Kazz]

Originally posted by UltrAramA:

Hehe, well I think you won't notice much difference having PhysX disabled compared to a system with a Nvidia card when it comes to game play. Some games just needs to have PhysX installed even if you don't have a Nvidia card, just disable PhysX in the game setting if it can be changed.

You could always try to have it on and see what happens.

That's not what i mean. I can turn it on/off at all.

Originally posted by Master Sweeper:

Did AMD users know that they can have both a Nvidia and AMD card in their computer? Just buy a cheap GTX 580 or GTX 680 for less than $100 and use that as your PhysX card.

Yes, you can use your AMD as primary card and Nvidia as PhysX dedicated, but for that you need a Motherboard that have 2 slots for modern GCards and at that point i would like to use SLI or XCross.

Originally posted by Rove:

Your CPU will do the Physx instead of your GPU. That's why you need to install it.

Isn't the whole idea of GPUs and PPUs base on that CPU can no longer handle such things?
I imagine that would be as big of disaster as emulating hardware on PC.

[_I_]

nvidias current drives will not allow for amd/nvidia gpu combos
if you have an older nvidia card thats upports amd/nvidia combo driver then yes
but more often its not worth running the 2nd gpu just for physx

either disable physx in the game or set it to run on the cpu