It is rated at 14V I think, however I ran it at 5V. It got cool and hot but I think it can go much colder (and hotter I suppose). I used a simple 486 heatsync and fan.
I may order a range of other clocks as I think I should be able to get the DSP up to 55, 60Mhz or so.
I will try and run the FPU at 64Mhz as it is rated at 50Mhz and shold be okay at that speed.