Sonnet Tempo SATA is a very good idea, as this system is still horrible slow due to HDD performance (1:45 min for power up, OFF --> Finder). The Mac is now equipped with 96 MB RAM (64, 16, 8, 8) and 256KB 2nd level Cache. The SCSI adapter is not longer available (don't know why, maybe I removed it to test something!?) and I'm wondering, if I can find an acceptable browser for Mac OS 9.1 which is already running. IE 5 and Netscape are a nightmare.Naturally, you want the G3...which leaves us with 2 slots left to play with. If it were my machine I'd probably stick in a better graphics card, as well as a Sonnet Tempo SATA. (neat card, even though it says G3 only, it will apparently work on older Power Macs, and since it emulates a SCSI card its bootable and doesn't need drivers)
PS: The Crescendo 7200/G3 is installed and running without problems. Until I'll receive my 384 MB, the Crescendo is equipped with 64 MB.