Edit: I'm looking at using this adapter http://www.amazon.ca/gp/product/B0041OEQA6/ref=olp_product_details?ie=UTF8&me=&seller= I only need one of these to setup a 3 monitor configuration in Eyefinity on my HD7970 right? The first two monitors can be plugged in through the HDMI port on the card, and the secondmonitor passively through one of the MiniDP ports, right? It's only the third monitor that needs the active adapter correct? I'm about to place the order, and need to know if I need to buy two or not. I was just under the impression that I'll only actually need the one.