[AubreyL]

I posted earlier about if I can use both a Nvidea 8800 GT and an ATI Radeon 2600 XT with my new Mac Pro. Currently it just has an ATI card and it seems like it'll work fine. The other question I have though, how will this work under VMWare? I have a Linux virtual machine but most of all I use a Windows XP Virtual Machine. Will there be a conflict between the two video cards when I use Windows XP? If so, I won't even need the ATI as much when I'm on Windows XP. Is it possible to disable that and just use the NVidea card while using Windows?

[ibook_steve]

When you emulate an OS, software like VMWare uses a virtual graphics card that uses whatever your Mac is using, so the hardware doesn't matter.

Steve

[seanc]

I assume you're wanting to run both these cards under Windows natively via BootCamp? What for? Quad monitor support?
I'm pretty sure it'll work ok, but you might have some software conflicts between ATI Cayalyst and nVidia software. It'd be best to just install the drivers manually and leave the software off.
When running via VMWare, the graphics cards won't matter since it will emulate its own graphics card.

[ghporter]

Probably for game compatibility-some games "like" ATI cards while others "like" nVidia cards (quite aside from what DirectX is supposed to do, the publishers tweak the living crap out of their code for one card or another). Just a guess.