i have been googling much for answer but only someone with real experience can help here.

my aim is to have 5 monitors connected to one computer in 2x2 full screen on all 4 monitors (video wall) with same resolution, 4xfullHD for example, plus one -5th monitor as controling. Ati have example picture of this configuration here. I have no gaming nor 3d needs here. Simple desktop applications plus video streams.

So because graphic cards for this are expensive, i need to find out before buying pros and cons of 2 possible solutions (1) Ati Eyefinity capable card(s) ...and (2) Nvidia Quadro/NVS card(s) with mosaic and/or nvidia surround technology.

For example i can find that current good cards for this can be:

1. Ati's 7870 eyefinity6 card, link here pros: one card can handle all 5 displays, cons: active DP adapters needed (sometimes with aditional usb-powering complication)
2. Nvidia Qudro NVS 450, link here

Both cards have DisplayPorts as outputs (my targets are HDMI displays), but as far i saw information is that Eyefinity needs "active DP->DVI/hdmi adapters" for outputs and they are little expensive...? Does nvidia have this limitation (active adapters) ???

And final question, is Ati Eyefinity still better for this purpose than Nvidia-mosaic by someone's real experience there.