Until today I wondered if I should have gone with an iMac over a refurb. MacPro 2.66. I even worried if the ATI 3870 was worth buying. Today I dropped the original NVIDIA graphics card in slot 2 (after calling Apple Care Support for advice) and I now have three Dell LCD's cooking. One 24" and two 22". Wow! I've never been happier with my desktop. Now if I can just figure out how to use all three of the Dell under LCD speakers for Left, Right, and Center Channels. RadioShack?