As I understand it, the passive adapters can only do the bandwidth of single-dvi, not dual-dvi....hence limited to 1920x1200 or smaller displays per port. I'm guessing by "wider" they mean 2560x1600 displays. Running multiple 2560x1600 displays is pretty irrelevant to me. :wink:
To quote Monoprice:
Supports up to 1920x1200 resolutions (single link).
NOTE: This adapter does NOT support analog signal. It will only output a digital signal. It can be used with DVI to DVI and DVI to HDMI cables and adapters, but NOT DVI to VGA.
http://www.monoprice.com/products/product.asp?c_id=104&cp_id=10428&cs_id=1042802&p_id=5106&seq=1&format=2
Seriously, are you guys arguing the active adapter issue really going multiple 30"? The only thing active adapters effect are the use of obsolete VGA displays or 30" displays. The only reason why they were using active adaptors at the demo was because of all of those 30" displays they were showing.