I have a Co-Op PhysX and another gtx 275 in SLI mode.  What's a good power supply to use?  I now have a Sunbeam 750W.  Nvidia doesn't have gtx 275 specs for SLI PSU's.  So far, the best thing that I've found is a 1000-1100W PSU for two gtx 280's.  There are other 1000W SLI-Ready PSU's that aren't on NVidia's list.  Ideas?

Thanks!

So one should be able to enable/disable their cards seperately or are they tied together? I cannot disable physx on gt250 w/o disabling my 9800gt.

When I do that it affects both cards at the same time. I cannot "select" to disable the GTS250 & enable the 9800GT. If I disable the 250 it greys out the selections. If I do the 9800GT-same thing??? Latest drivers from Nvidia,uninstall,reinstall,registry clean-same results. Havn't seen this issue discussed on any other forums...any help..PLEEEASE !!

Yes,same result(can I panic now)!

LOL, I'm glad you got it working! Hoooray! 

Sure ^^ but not for me dudes ...I really want that 275 SLI working :/
ganna catch another Lightning though raah! 3 cards instead of 2 it's frustrating me :(

What would be the use of the second GTS250 if 2 GTX275 Co-Op match together ? xD ...nothing ?

NB: what's the local brewage in here ? lol

just asking, Can we use our IGP (on-board vga) for Physx when we have add-on Graphics card ?

awesome, very nice, cool :)

wow. this is JUST the type of thread i've been looking for...
 
 
edit: NOTE I didn't realize this thread was for 290 cards.. but here's the thing I'm interested in adding a THIRD gfx card to my system, either now or later. the only problem is that.. my third PCI-E 2.0 slot, it can only do 4x!  but I want to use it for a pure-physx solution.  A) is it worth it B) technically, will it work??

so, can someon tell me in practical terms.... what kind of performance loss will I suffer, if I try and plug in a gtx 290 into my third pci-3 slot..?  this would be the third card of course, with the first two being GTX 580.  (yes, yes, I know. this is WAY overpowered. by no stretch, do I need this technology now... I just, I want to know what's possible now, and in the future.. thanks :)
 
 
 

I have two brandnew GTX 580. and evemore exciting, i have THREE identical 28" hanns-g monitors (3ms) and I'mgoing to hook them up.. and play starcraft 2 across all three screens, at like 5790x1900... :P
 
pretty rad, huh??
 
oh yea, I'm also going to use them for professional/production work :) video editing, audio production, web desig... on and on...  that's what i do :)

Ok im pretty new to dedicated physics x thing, id like to know how big of a difference in games i would see if i run 570 with 460 as dedicated physics x card and 570 with 295 as dedicated physics x card, will threre be any performance difference, minimal, significant,major?

this thread is sticky under "Evga Geforce 200 Series", thanks for reply ill try in 500 series thread, also i cant figure out why my avatar isnt showing as my photo, i ticked the box "use avatar as photo" in settings but its not working

wow 3way sli? idk most boards don't have all 16x pcie slots. but from what i hear every board's chipset is designed differently when it comes to how many channels can be opened in any instance. for gaming tho, i doubt you'd notice the difference with 3way sli boards with 16x/8x/4x vs 16x/16x/16x.
 
had 2-way sli before with a 16x and 8x channel on an evga x58 3-way sli le, and the decrease was unnoticeable to me when i got a new board with 16x, 16x/8x, 8x channels. a 3rd on my other 8x channel would have been unsupported for most games back then, so no need. never had a dedicated physx card either.. figured i'd upgrade my GTX275's eventually and use one of them for it like i am now with my current rig =)
 
good luck with your 3way sli.

as opposed to the best or worst GPUs? it will still be way above average compared to GTX200 series. the new 500 series, probably closer, but no cigar. also depends on your RAM and CPU.