Cheapest GPU for WoW

[xcel_jkl]

hi guys would you know what would be the cheapest GPU upgrade for WoW to run without problems?

preferably single GPU setup (no xfire,SLI). Since i dont plan to play demanding games like crysis or farcry etc, i dont need to make my GPU to be that too future proof.

other games i would possibly play in the future however are Civ5 and diablo iii but other than that i'd use my pc for simple daily internet usage and photo editing.

current specs:

amd phenom ii x4 945 (3.0GHz)
asus m2n68-am se2 AM2+ mobo
2GB Kingston ddr2 667 RAM
nvidia 9400GT 1GB
silverstone st50f-es 80+ 500W PSU
20" LED monitor 1600x900 res capable.

thanks!

 

[xcel_jkl]

bump

 

[Mousemonkey]

Don't...

* Post in ALL CAPS or use excessive punctuation!!!
* Share personal information, like your email address. Identify theft is real.
* Bump posts, claim "first!"
* Hijack a topic. Stick to the original conversation.
* Ask for help pirating, cracking passwords, or bypassing copyright protection

Source.