Small yes, expandable no.
To the op - what type of hi def content, some formats require more cpu usage than others, for example h264 seems to use more cpu than wmv hd on my system.
- well a mac mini should be able to do this quite well in my opinion, apple seems to be able to run it better than a pc without a dedicated graphics card.h264 will be the format they will be turned into but also from sky HD etc then convert to h264
Thats like the mac mini, it has a small hard drive from a laptop fitted.does it have a flash slot or something to install an OS onto, the media will be streamed from a server so the box will be connected through a gig switch