Isn't "Eyefinity" all about a 6-monitor card or a 12-monitor card? We're talking >$1000 to "WAAAYYYY up there"... ?? Nvidia NVS 295s can be had for $50 or less, including the important DVI-DP adapters (2 per card).... sometimes even less if used... on Ebay. Years ago, I used ATI cards. Now I use Nvidia. No plans to change back. For multi-card trading rigs, I can't think of any video card or other hardware which is any better or more cost efficient than NVS 290 or 295.
12-monitor cards is what makes the news but the most common crads with eyefinity drivers support only 3 monitors. They tend to have different interfaces to each monitor like D-SUB, DVI-I and DisplayPort. They cost under $50 each too. Scataphagos, I think you didn't follow the link in my post. The linked article on Tom's Hardware provides lots of pictures of 3-monitor set-ups.
Sorry, hadn't notice the link. Have read it now, but it looks like there are too many "gotcha's" with the budget Eyefinity... I wouldn't bother with it unless it looked like I had no other option.
There are a few difficulties... But also there are issues with Quadro NVS cards that support 4 monitors (just search the Web, some of the monitors not beigng recognised after reboot seems the most common). USB graphics cards have a mass of their own "gotchas" depending on the model and brand.
I've never been much of a fan of quad video cards. Some computers won't even run them... and the cost... plus, if the card fails you might lose all 4 displays at once. Wouldn't use USB monitors either unless I had no choice. Better... use dualhead video cards... just get the right mobo.
I am used to the dual cards from PNY Technologies. Nowadays you can pick one up (e.g. 8400 GS) at $60. So it's about $30 per monitor. From what I have seen, those quad cards are something like $400-$500. (Which makes $100 per monitor supported). I can't imagine how much the 6-head and 12-head cards would cost. Wouldn't be any lower I don't think. So I would rather spend the money to change the MoBo and keep my 3 dual cards (and buy more new ones) than to change out for 4/6/12-head cards. Besides, the survivability and replacement cost is also a big concern of mine. 12-head card... card fails... That's the end of the world. Another $1000 please... 6 x dual cards... 1 card fails... only 17% down. System still usable. No big deal, $60 a replacement in a jiffy. For those who say it won't happen.... Remember Murphy's Law.