Can anyone recommend a graphics card that has 2 HDMI outputs compatible with a Mac Pro 1,1? I wish to connect 2 HD monitors (probably from Iiyama - http://www.iiyama-monitors.co.uk/products/XB2472HD-B1.aspx). Also, on another note, does connecting using DVI to HDMI cables still produce a true HD signal?
You do not want this. HDMI out will not give you the video output you believe. Computer output and video output from a breakout box/card from Matrox, AJA or Blackmagic are 2 completely different signals. You want the second option listed here.
Eisen Video Productions
Chicago Final Cut Pro Users Group