2 screens on Radeon gpu, can it be done?

[AlfaStation]

Hi,
I started dual-boxing 2 days ago.
I have a Ati Radeon X1950pro in main system (->22" screen) and an X800pro on my secondairy (->19" screen) .

Can I add another screen to either of these systems (for 3-boxing WOW using MultiBox) ?

I believe i read somewhere only nVidea and Matrox cards have "true" duall-gpu heads and that Ati only clones or stretches over multiple screens.

Can it be done?
/thanks

[Lost Ninja]

Try it by sticking both monitors onto one PC, assuming the cards have dual head output you'll quickly see if dual head works or not.

[Scribbler]

X1800XT

I have a 24" for gaming/media, 17" for IRC/MSN/Second box.

Works fine.

[AlfaStation]

Tried it out on main system and indeed, it works.
But only if both copies of the game run in windowed mode.
As soon as one goes to full-screen mode its impossible to switch over to the other without going to desktop first.
There's also quite a serious performance hit (as allready been mentionned in one of the stickies). FPS drops to 12-20 on main screen.

Guess the best way is to keep main toon by itself on 22", and run the 2 others on the secondairy system in windowed mode.
But then again MultiBoxing won't work since only 1 window will be active at a time.

On nVidia, can you run 2 copies of wow on 2 screens both "active" at the same time?
If so I might consider upgrading to a GeForce 8800GTS 320MB.
They've dropped down nicely in price :)

[Lost Ninja]

Not on any of my Nvidias no, and once again performance hit. Only way I know of doing it (and this was when you has to use a PCI for 2nd head so info is way old) was to have 2nd card in 2nd slot. Now, no idea. :(

[Djarid]

As has been posted in another thread if you span your desktop and use maximiser to resize / relocate the 2nd / 3rd instance of WOW then you will not get the 2nd screen performance hit.

I was getting 80%+ CPU utilisation off my second instance before spanning the desktop... now it is less that 40%

[unit187]

As has been posted in another thread if you span your desktop and use maximiser to resize / relocate the 2nd / 3rd instance of WOW then you will not get the 2nd screen performance hit.

I was getting 80%+ CPU utilisation off my second instance before spanning the desktop... now it is less that 40%
I had 100% usage of duo core cpu by 2 clients with minimal graphic settings on both and like 10 fps. After setting up horizontal span I run 5 clients, one of them is on max settings. All maximized, it lags only in big crowded cities, otherwise 50 fps on each.