Just thought I'd mention there are different types of DVI connectors:
DVI-D is the real digital connection.
DVI-A (quite rare) is analog, and has no real benefit over a standard VGA cable.
DVI-D is a combination cable that combines DVI-D and DVI-A into a single cable.
There is also Single Link and Dual Link cables....unless your running a really high resolution screen that requires dual-link there is no benefit to using a dual-link cable.
In my experience I noticed little difference between DVI-D, DVI-A and VGA on a Viewsonic VP2130b 21" LCD (hooked to a GeForce 7950GT), whether watching movies, playing FPS games, or playing with photos. I do notice more difference on a second Viewsonic 17" LCD on the same card...
If you buy a DVI cable, make sure it really is a digital cable; when I used a DVI-I cable my screen came up analog... I had to get a proper digital cable to finally get it to run digital mode.
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