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any 750Ti knocking around?
I'm using a ATI 5450, you want something like this. Low power, enough RAM for video playback and not using system memory. HD codec hardware support. Basically a new version of this type of card.
Don't want 3D or fan based card
I thought of doing this myself, then i realised i could do with a decent midrange NAS so i figured it's prob simpler to go for a Nvidia Shield since they supposedly play anything you throw at it media wise, no hassle involved.
Any Intel i5 with with onboard graphics should do it, why do you want a video card too?