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Apocrypha

PhysX and multi-monitor support

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Ok, so can someone tell me if it's possible to use a 9800GX2 for both PhysX and sulti-monitor support at the same time?

 

I'm thinking of snapping up a cheap second hand one (see trademart) and then using it atm as my main GPU, with a view to whatever card I buy now (it might be something cheaper...) to become a secondary card down the line.

 

Plan is to use the secondary card to support multiple monitors and PhysX, and I was thinking of getting, say, a 9800GT (cos they're cheap) that would tide me over until my major upgrade in November/December. That card, then, would get moved over to the new PC and I would use it for a second and third monitor, running my main screen off a GTX280 (or something) for gaming and the like. Then, when I wanted to game, I'd just turn off the other monitors and the secondary GPU would be for PhysX. Fun times.

 

But now, methinks, that if I have a 9800GX2, becasue there are 2 GPUs on it, I might be able to be ultimately clever and have

 

1. Display 1 off GTX 280 (unchanged from the current plan) for gaming goodness

2. Displays 2/3 off 9800GX2 core 1 (yay) --> SLI disabled (can I do that? -- think so, cos I've seen that ASUS TOP verson of the 9800GX2 with 4 DVI connectors, specifically designed to run many, many monitors)

3. THEN PhysX on 9800GX2 core 2 in-game

 

ALL AT THE SAME TIME

 

So such a hypothetical setup has 3 GPUs -- one big fat one for gaming and two more, running independently, for more monitors and PhysX, respectively.

 

I suspect that if I just went out and bought a tri-SLI board and had 3 separate cards, this would defintely be possible, but am unsure if this would work with 2 cards (GTX 280 and 9800GX2) with a total of 3 GPUs.

 

Is this even possible? Drivers, yay or nay?

 

Ah, hamstrung by possibilities!

 

Ok, go.

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Doubt you'd be able to accomplish all that. Seeing as the cores on the 98 are on the same PCB, I don't think there are any current drivers and software to isolate the cores into doing different tasks or running different applications.

 

Nor do I think that you can have a dedicated GPU to doing PhysX alone, remember it's just an instruction set on the card, a feature, so you'd either have to program the card to be able to use different GPUs for different apps, or use some special software.

 

What you can do is run an app on a monitor connected to a seperate GPU, which will process what ever you have running on that monitor. Though, I still doubt you'll be able to get the dedicated GPU to do physX alone.

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Haha!

 

I'll see you and raise you 5.

I want to do the same thing as you Apocrypha, but I intend to use cards from two different vendors:

8800GTS 512 and a HD3870X2.

 

Reckon it'll work?

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Haha!

 

I'll see you and raise you 5.

I want to do the same thing as you Apocrypha, but I intend to use cards from two different vendors:

8800GTS 512 and a HD3870X2.

 

Reckon it'll work?

Well, if you're using Vista, those two cards won't work at all together :P

 

So that's a start lol.

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Yeah, that sucks, hey Neo?

 

Hmmm. I suspected as much FB, NVidia isn't that cool.

 

Maybe I should just stick with the original plan of buying a GPU to use as a main atm, then when I upgrade, make it redundant and use it as a secondary for multiple monitors and PhysX, but not simultaneously.

 

Verdict FB?

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