I was researching some more PCI Cards currently listed on eBay and ran across an interesting tidbit:

http://en.wikipedia.org/wiki/Comparison_of_ATI_Graphics_Processing_Units

Useless to me, I was looking for resolution and color depth capabilities, like which ones will do modern WideScreen LCD resolutions along with 1600 x 1200, all at 24bits & 60Hz

However, I did find a reference/possible solution to your problems, coius!

disabling the "ATI Extension"

Now that's info I NEEDED!!!!!!!

Has anyone run across a Resolution/Color Depth/Scan Rate Chart for Mac PCI Video Cards?

Mac Model & OS compatibility would be an added bonus for MultiScreen-a-holics. :approve: