The problem is the other hardware. USB3 is great, but my two year old DSLR isn't USB3. My 5+ year old mp3 player isn't even USB2... hell I don't even know if my latest Galaxy Nexus is USB3.
And as has been stated already, the majority of software just uses one thread of the CPU anyway, so the others are wasted. When I know I can encode a full HD video and do various other tasks at the same time, then I will be impressed
Saying that, if I am in luck I'll be spending about £1000 on a PC this year.









