It has nothing to do with the processor. On a computer netflix does not enable gpu decode for hd while on your phone or 3ds or roku it does. What is really sad is it used to be enabled and you will find old reviews for the acer aspire revo which was a single core atom paired with the ion gpu and in those reviews netlifx works great. Starting with silverlight 4 I believe it was disabled and now it is fully cpu dependent.
I would recommend dual core sb for a low power htpc that can do netflix hd
This is pretty spot on. I had the Dell Zino running really well ... until Silverlight 4 was released, then Netflix went from perfect to unwatchable.
My only difference would be to recommend a low end SB proc. I am running the G530 flawlessly in my new setup.