I never even tried any GPU folding with it, I just used the IGP so I could see what was going on when booting and changing settings in the BIOS. It's running notfred's "diskless" ISO
from the optical drive (because I still can't seem to get a board which allows me to boot from USB flash drives, though maybe I just don''t understand how to do it properly), and that's all for now. I'd have to build my own ISO in order to run it anyway while that machine has no hard drive, and that would probably require more work than I'm ready to put into it. When I finally give the machine a disk, then I'll see about trying GPU folding with the machine, though I probably won't even test it on the IGP because of the evident slowness others' machines have demonstrated.
Probably the way to mess around with it that would be easiest is to build another Linux virtual machine for VMware, and test it out there. Then if it works, I could just back up the Linux stuff to some place that my network can read from, and then copy from there onto one of the PATA drives and use that drive for the "new" system, if I can get access to the drive from inside VMware (I forget what limitations VMware places on what you can do, but it seems like Linux should allow me to mount, format, and install a distro onto a drive). I'm doubtful it will be worth the trouble to do the copying part, though, and I may just install from whatever Linux distro I choose (hopefully it will have an ISO available to boot and install from) and then download everything folding-related for the system once I get it up and running. But testing in VMware seems like a simple way to find out if I can get any kind of GPU performance while still running the SMP client.