What's the best vid card I can run on my psu?

[yopperpo]

I really have no idea how to analyze the specs of a PSU, all the specs are listed here. Can you guys help me? I don't understand how to analyze specs on power supplies at all, I have this one

http://umlan.com/index.php?option=com_content&view=article&id=135:ultra-products-x-finity-ult-xf600-bk-review&catid=1:hardware&Itemid=2,

what is the best vid card I could run safely on it? Preferrably from 100-200 range?

 

[sosofm]

Radeon 6870 or Nvidia 560Ti.
SAPPHIRE Radeon HD 6870 1GB 256-bit http://www.newegg.com/Product/Product.aspx?Item=N82E16814102948 170$ and 160$ after rebates,
GIGABYTE GeForce GTX 560 Ti http://www.newegg.com/Product/Product.aspx?Item=N82E16814125401 220$
EVGA GeForce GTX 560 Ti http://www.newegg.com/Product/Product.aspx?Item=N82E16814130623 200$ after rebates.