>I'd love to waste the power of my 2nd CPU on video decoding. Currently, I'm wasting it on doing nothing at all

That's not what I meant and you know it.

But we do have many systems now with an extra cpu to spare (even my G4 system has one completely unused), so why not?
If we are not implementing SMP, they are just sitting there.

Oh, another advantage of the P50X0 cpu?
DDR3 and much higher memory bandwidth, that will add to the performance advantage over G4s and help close the gap with G5s (the best G5s only offer DDR2).

And its a pity we may never see a PPC implementation designed for us with a cpu that supports DDR4.