using a second card for physX and cuda

[siumatfung]

hey guys i have just seen posted in a forum a guy using an ATi and Nvidia card in there system is it possible to run an ATi card for primary graphics and use a Nvidia card just for physX and cuda?

 

[LoadsaMoney]

hey guys i have just seen posted in a forum a guy using an ATi and Nvidia card in there system is it possible to run an ATi card for primary graphics and use a Nvidia card just for physX and cuda?

Yes, but only in XP or Win 7, not Vista.

 

[siumatfung]

so it is possible cool erm how much of a performance increase would it be? would it be worth the 100£ for a 9800gtx? or shud i just use my spare 8800GT but no cuda

 

[uv]

your spare 8800GT will do cuda, and it's all that's needed for physx.

I used to use a 9500GT next to a HD4870 for physx in games like Mirror's Edge, which worked great.

The 9800 would be a waste of money, and wouldn't give you any performance benefits in games over the 880GT.

If you look for threads started by me in this subforum, you'll find when I first paired the two cards together

 

[LoadsaMoney]

http://forums.overclockers.co.uk/showthread.php?t=17983962

Would be a decent performance increase.

May as well just use your 8800 GT if you still have one, but its pointless at the moment with bugger all making/hardly making use of it.

EDIT: Links uv's thread.

 

[siumatfung]

sweet now to work out where to move my HDDs to fit the 8800GT in the 2nd slot of my Ip35, would it matter that that lane is only 4x and would slow the primary down to 8x?

 

[uv]

would it matter that that lane is only 4x and would slow the primary down to 8x?

Not at all. 8x is plenty for a 4870, and whilst 4x is going to start bottlenecking an 8800, it's enough for physx.

 

[HeX]

sweet now to work out where to move my HDDs to fit the 8800GT in the 2nd slot of my Ip35, would it matter that that lane is only 4x and would slow the primary down to 8x?

Using the 4x slot doesn't effect the 16x slot on a P35 board, they are hard wired.