For the sake of convenience, I ended up replacing a ebay sourced hacked 9800 AGP/hacked 9200 PCI combination with an OEM Radeon 7500 AGP; some of my OS9 software did better with the 7500 AGP than with the 9000 series cards (or even the NVidia holy grail AGP for dual boot machines, surprisingly enough). I was spending most of my time in OS9, so didn't miss the 9800.