So I'm building an HTPC for myself, it's going to be outputting at 1080p to my television, running local media but also maybe streaming over the network. It'll also have a ton of storage as I'm going to use it as a network backup solution for my desktop PC.
How CPU intensive is this? I was just going to buy a cheap 3 core athlon to keep costs down but if I should be stepping up to a quad core / chip with more cache to get this done I will. I figure the biggest "load" would be decoding HD video, but I'm still not sure if that's actually intensive.