I used an old SGI Fuel (700Mhz, 2GB Ram) as my daily driver @ work until 2013. I would rdesktop to use heavy websites, but other than that it rocked.
Stopped using it because I graduated and I didn’t want to pay the electricity bill or keep a jet engine running at night (light sleeper)
If anyone here had successfully converted an SGI to a fanless SSD unit, let me know!