Can I drive two external screens from an 'Alu' iMac?

Posted by robsoft on Super User See other posts from Super User or by robsoft
Published on 2009-08-06T08:15:32Z Indexed on 2010/12/24 0:56 UTC
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mac

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multiple-monitors

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displayport

I've got a 24" 2.4 Ghz Core 2 Duo iMac. It's about 18 months old, though I can't specifically remember when I bought it. It has a ~~Displayport~~ Mini-DVI socket on the back, and currently I have that linked to a DVI adaptor driving a Philips 20" widescreen monitor in portrait mode (awesome for browsing).

I have another, identical Philips monitor and wondered if there was a way of connecting that to the iMac too. Is there such a thing as a ~~DisplayPort~~ Mini-DVI to dual-DVIs adaptor?

Can this iMac's graphics card even drive such a set-up? The graphics chipset in the iMac is reported as ATI Radeon HS2600, 256 MB.

The main iMac display is 1920x1200 and the Philips display is 1050x1680 (@60Hz, rotated 90 degrees). The third screen would be another 1050x1680 and ideally I'd have it portrait again, too.

EDIT: Please let this question stand - it's not a dupe. The current Mac laptops use 'Mini Displayport' connectors, which are not the same as ~~DisplayPort~~ Mini-DVI connectors.

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