Those are gaming cards, Gaming and graphics rendering are two completely different beasts. Granted Adobe isn't anything too intense for stuff like that you will usually need a higher end card designed for rendering with a high amount of memory on it.
www.newegg.com > Video cards > Preferred company > Preferred amount of money > The search results for everything they have in stock > Your choice of what you want in your system.
I'm sorry I can't really be of much help, I've only ever dealt with gaming cards so I couldn't tell you what to look for, just search newegg for something you like.