If its for an HTPC, do yourself a favor and get a passively cooled card. The noise difference can be incredible on an HTPC and since the card doesn't need to do much, its easy to get by on a lower-powered passive card.
Since they're so cheap, there's no reason not to get one new enough that it will do DXVA or whatever the ATI equivalent is (GPU decoding of video).
I bought a Radeon 4350 with HDMI (w/ audio) out, GPU decoding capable, and passive cooling for $35 2 years ago. I regularly see them now on Newegg for the same price with a rebate making them about $20-25. For an HTPC, besides using integrated video, there really isnt a better choice I can think of.