I hope to replace my G4 Power Book (and sell it) now that I have X5000 but I haven't got round to it yet. I'm not really in any hurry as still busy exploring OS4 and getting it how I like. The combination I have right now is RX580 and HD5450. The 5450 isn't ideal but it's the only other card I have that's supported. I don't desperately want to keep buying2nd hard cards. Have to stop spending money somewhere and I still need the money for another MOS license yet (hopefully from the sale of the G4).