Low-power-consumption card for Photoshop?

I'm looking to get a decent video card for image editing on Photoshop CS4, and ~possibly~ video editing for Premiere Pro.

CS4 isn't very GPU intensive, so I don't need the latest pro-gaming-level card. I don't even play games. Pretty much any decent card with 512MB+ ram will do. Rather, I'm looking for something that has low power consumption, efficient, and runs relatively cool, for around $50. This is because it will need to go inside this micro-ATX case, where power and running temperature is a concern:
http://www.tigerdirect.com/applica [...] CatId=3428

Can anybody make any recommendations from the selection of widely available cards today (from TigerDirect or Newegg)? I was looking at this EVGA GeForce 9500 GT and it seems it might good:
http://www.tigerdirect.com/applica [...] =E145-9504

Power consumption of HD 4550

http://www.xbitlabs.com/articles/v [...] html#sect0

Thanks for providing such a definitive answer! That's an eye-opening chart