I would listen to Mat here. He obviously knows. I ran 8500s with a copper PowerLogix up to 450/60 amd 9500s Newer 400s and XLR8 Carrier Zifs, but there wasn't much you could do to snap it up. Yes, get the 800 or a 1000. But the BIG question is what will Logic do? Mat, are you running Logic? I'm assuming Syntho is using it. I never got Logic, with audio, to play it cool on any SCSI machine, but I sure learned a lot about Logic trying to figure out why! 1.5 gb ram is okay, though memory checking apps won't read more than 1gb. Forget the builtin SCSI....
If someone wants to donate a Magma chassis, I'll take one....