I'm running 001 on a G4-400 AGP, 320Mb ram, ATI Rage 128, 2 Maxtor harddrives, Yamaha SCSI CDRW 24x4x8, Adaptec 2906. I've been researching ways to beef it up. I've looked at replacing the CPU with a bigger one, but none of the upgrades are compatible with my G4. Go figure ... if I had a G3 I'd be able to upgrade to G4-500, or even G4 DUAL 500s! Ram is a different story, though. My G4 can run up to 1.5Gigs of ram, and you can get 512Mb sticks for $80 each now. Would it be prudent to max-out the ram, or after a certain amount would it be overkill? I've just started learning about RAID, and it looks like the new ATA133 RAID cards/system which are made by Sonnet and Acard may be a way to get a lot more out of my puter, without the MAJOR expense of a SCSI raid system. I've discovered that the 2 internal harddrive limitation in a G4 is untrue, and that 4 will fit in there: 2 in the supplied vertical bracket, 1 to the left of it, then 1 more to the left of that. My problem is that RAID can be done in many ways, each way having it's own purpose, and since I've just started learning about it, I'm not sure what would be best for my situation. From what I've learned so far, I believe that a 1/0 configuration is probably the best bet, using 4 harddrives. However, in order to achieve that using an ATA133 card, the 0/1 configuration is achieved through a combination of hardRAID and softRAID (?). Or ... maybe I don't understand this whole RAID thing enough yet to have any idea what the ^#$% I'm talking about ... ... any help with this area would be GREATLY appreciated. And, yes, I understand that the 4 harddrives must all be ATA133 in order to get full benefit from the system. Next ... the CDRW. I bought my SCSI card when i bought this G4, when I was a total newb, and never gave it another thought. When I was on the Adaptec site a few days ago, I discovered that my damn SCSI card is only fast SCSI (10Mb). My Yamaha CDRW is capable of transfering at 20Mb...Duh... So, given that the CDRW is my only SCSI device, I'm thinking that my best solution is to buy a firewire case instead of a better SCSI card, thereby freeing-up a PCI slot. Wise move? Last but not least ... the graphics card. The two cards that I'm looking-at are ATI Radeon Mac and ATI 7000 Radeon. They both have 32Mb DDR memory, and they're both relatively inexpensive. Appian is not an option here ... lol. The Radeon Mac is a great card, and will go right into the AGP slot. On the other hand, the Radeon 7000 Mac would give me dual monitor support, but it would require me to use a PCI slot. If I go with my firewire idea for my CDRW, as previously mentioned, it will leave me with only the 001 card on the PCI bus, with 2 PCI slots open, so even if I go with the Radeon 7000 Mac, I'd still have a PCI slot open. KEWL! But, will having the video card on the PCI bus as opposed to the AGP slot affect my performance negatively? If so, would the adverse effect outweigh the benefit of having dual monitors? In conclusion, as you can see, I have been doing a lot of homework to try to figure-out how to get the most out of my G4. I just wish that I had more technical knowledge to be able to know the best way to go about it. Any and all help and advice would be greatly appreciated.