Im running it on a R12K 300mhz Octane MXI, 1 gig ram. Looking at maxing out the ram, drop in a faster proc and replacing the system disk with a 10K rpm drive.
I cant upgrade to a fuel as I wont be able to re-license SI as it is no longer supported. The Octane 2 should be ok as long as I transfer my sisID modual from the old system. I looked at upgrading to an octane 2, but in order to outfit it similar to what I have, it will cost a lot more.