See:http://ati.amd.com/products/Radeonhd4600/specs.htmlTwo integrated DVI display outputs
Primary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
See:http://ati.amd.com/products/Radeonhd4800/specs.htmlTwo integrated dual-link DVI display outputs
Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
As far as I can tell, it relates to all models.Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display
I'm not sure you can. Why would you want to?