This article on Phoronix might be the info you're looking for: HD Video Playback With A $20 CPU & $30 GPU On Linux AFAICT it works only for H264, not sure about WebM status, hopefully being on a rolling distro you'll be able to get it as soon as it comes. I've been following this topic (video accele...

If you still want the CPU only power consumption, you'll find it in this review at LostCircuits: http://www.lostcircuits.com/mambo//index.php?option=com_content&task=view&id=70&Itemid=42&limit=1&limitstart=4 There was also a good review about low-end platforms , with power consumption figures, at xb...

I'm searching for idle power consumption of CPU's. Not TDP, not total system consumption. Why? To choose a processor for a NAS/nettop/HTPC/downloadserver. A computer that stays on night and day. Even for your kind of usage, the relevant figure is the total system consumption. This is in the end wha...

Read this article on tomshardware dot com about what you can do with your AMD CPU with a little voltage tweak: (edit: it looks like i can't post URLS yet since i'm new and i dont have at least 3 posts. The mentioned article is named "Tuning Cool'n'Quiet: Maximize Power And Performance" - part1 and p...