It's crazy to think we've been writing about and waiting for AMD's Fusion platform for close to five years now. Believe it or not, it was back in 2006 that the chipmaker first started talking about its "new class of x86 processors" and the idea of an Accelerated Processing Unit (APU) -- a chip that would combine a CPU and a fairly powerful ATI GPU onto the same die. The company promised to have the silicon ready in two years' time, but when 2008 rolled around, it was clear that all it was prepared