nvidia physx question ?

psychas · 28 Dec 2008 at 18:43

do u need sli motherboard to run for example 280gtx as a main card and 8800gt/gts for physx?

ty

LoadsaMoney · 28 Dec 2008 at 18:59

No you don't.

jrwagh333 · 28 Dec 2008 at 19:05

wow thats interesting. So i have a 260 and could get a 8800 to do psyX on my AMD-790FX chipset?

do i have to link them with a SLI bridge?

LoadsaMoney · 28 Dec 2008 at 19:35

jrwagh333 said:
do i have to link them with a SLI bridge?

No.

Kennysevenfold · 28 Dec 2008 at 19:42

why do you need a 8800gt for physx

those GTX260 cards have built in physx, you would see any improvement in performance IMO

mrk · 28 Dec 2008 at 19:49

There is a few FPS improvement using say a GTX260 and a 9800GT to do just the PhysX. The Cryostasis benchmark review shows 43fps~ vs 32~ average when using a GTX260 with a 9800GT to do physx and when used alone.

I'd like to know though, does that mean I can use a 9800GT on my AMD Crossfire mobo (Asus P5KC) ?

LoadsaMoney · 28 Dec 2008 at 19:51

Yes you can, all you need is a mobo with 2x PCI-E slots, SLi/Xfire doesn't matter as your not using those.

mrk · 28 Dec 2008 at 19:56

!

HOT DAMN!

So if I can grab a cheapo 9800GT/8800GT I am set!

Van Diemen · 28 Dec 2008 at 20:02

HatMan · 28 Dec 2008 at 20:27

This is interesting. Is there any point to me using my old 8800GTS 320 for PhysX with my 280GTX? How does the software know which card to use?

Thanks

mrk · 28 Dec 2008 at 20:35

HatMan said:
This is interesting. Is there any point to me using my old 8800GTS 320 for PhysX with my 280GTX? How does the software know which card to use?

Thanks

in Nvidia CPL you choose which card does the PhysX

HatMan · 28 Dec 2008 at 20:41

Thank you mrk

w311zy · 29 Dec 2008 at 01:43

HatMan said:
This is interesting. Is there any point to me using my old 8800GTS 320 for PhysX with my 280GTX? How does the software know which card to use?

Thanks

Yes i am using a 8800GT with my GTX280 and it helps a lot

Montegue · 29 Dec 2008 at 02:09

I tried my 8800gtx under my 280gtx and there was very minimal extra fps even on physx benchies. Not worth bothering about IMO, the 260/280 handles physx pretty well on their own.

mrk · 29 Dec 2008 at 02:10

Was just thinking actually, my XonarD2X would be blocking the second PCI Express slot anyway if I got a 8800GTS class card so I suppose it's out of the question anyway!

psychas · 29 Dec 2008 at 13:22

another question will the card that does physx if physx is not in use will it use power ?

MeatLoaf · 29 Dec 2008 at 13:42

psychas said:
another question will the card that does physx if physx is not in use will it use power ?

Yes

ps3ud0 · 29 Dec 2008 at 15:04

Will it do Physx if the main card is an ATI one?

ps3ud0 :cool:

psychas · 29 Dec 2008 at 15:41

ps3ud0 said:
Will it do Physx if the main card is an ATI one?

ps3ud0

dont know about that one when u install Cryostasis u have to install nvidia physx drivers.

i could have check but 8800gts is to fat to fit in second slot. water cooling is in the way

how ever playing Cryostasis on ati card u cant play on shader 4.0 because there is graphics corruptions, probably were physx comes in play.

ps3ud0 · 29 Dec 2008 at 15:52

I expect it doesnt work, but technically theres no reason why it shouldnt...

I guess the OS (or moreso the GFX drivers) arent expecting to be installed and effective at the same time...

ps3ud0 :cool: