To pass on my new found (but VERY limited) knowledge - there are pretty fundamental differences between video cards for the AGPx2 (as used on above G4) and the AGPx4 as used in the Quicksilver. Although single cards can and have been made to meet both standards, there are more that are only AGPx4(and better). This is especially important if you want to get a system meeting Apple's 'Core Image' specification. The bottom line is that you have more options for Quicksilver. What is a killer is wanting to support an ADC monitor without an adaptor on a Core Image system. Progress - don't you just love it! Perry -----Original Message----- From: Richard Ramsowr Would these cards also service as updates for a QuickSilver 733? I would think so but second opinions are always welcomed and useful...