SGI o2

Courtesy of my uni, i now have five SGI o2's. Hopefully with a little tinkering and a bit of help these will form the backbone of my experimental render farm for Final Cut Pro and After Effects. Given that my PowerBook is on the verge of melting after two days solid rendering of HD i figured i needed somthing with a bit more number crunching power. Short of buying a new machine this seemed my best option and i have always wanted to say i have my own render farm. As yet i dont know their spec or even if they will boot.
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I also want to try setting them up as a cluster to offload tracking work to from PFTrack but this looks a bit more troublesome as theirs no free software to do it but i'm on it.