Can you imagine how UT2003 or some other high end games would run on this?
it's a DSP not a CPU. The high processing power is in 8 bit only, UT2003 would probably run dog slow on that baby if it could even be made to run on such a chip - which in itself is highly unlikely. You would be able to decode oggs at an amazing speed however, if you use Tremor at least - since integer only code is much faster and more suitable for DSPs.
Light does however have some interesting attributes, it's easy to go from high to low fast without suffering from slug, and light based processing probably doesn't emit EMI.
However I'm not an expert.