UPDATE: Dual Core Atom HTPC
What I will say may contradict what I have said recently about the Dual Core Atom as an HTPC
. I have just tested its capabilities with a Sammy 40A650 and I have to say, my findings are great. My initial impression of an HTPC is a computer that has a very good video card, a very good audio hardware, and can play HD videos flawlessly and great fidelity, that is why, all the while, I was thinking that my dual core atom pc barely reaches an HTPC status. After seeing what the dual core atom pc can do, I may not continue with my prospect for an athlon based HTPC. What I have right now is good enough HTPC for me. What I am saying is, if what you want is something that can play HD videos well enough, a dual core atom based HTPC will suffice. Small and cheap.
My opinion, if you are not that concerned with audio regarding TrueHD, DTS-HD and the like, and you can do without them, an HTPC at this price beats any NMT. I spent around 11k and that already included a 640GB hdd and not to mention the added capability of upgrading codecs on the fly, using IE/Firefox when surfing the web, your choice of torrent client (uTorrent for me), NAS with discrimination (share only a folder or partition) and play games (like Warcraft III, though it sucks to play DOTA at a 40" screen, 'masyadong malaki'). If you have a hard drive lying around, cost goes down to 6.5k (D945GCLF2+2gigram+Casingw/PSU), that's just 800 more than a WD TV HD Media Player.
The PC is connected via VGA at 1920x1080 playing 720p and 1080p video (mkv) using media player classic with CoreAVC video decoder. Audio is connected via 3.5mm to 3.5mm jack plug to HTIB.
DISCLAIMER
I have to point out that I am not a videophile and/or an audiophile. What is great for me may only be good for the enthusiasts. Someone might buy the same PC and get disappointed and blame me. As far as it concerns me, video playback was very smooth and great.