Im buying a new video card, what do I need to know?

[Viper1]

O-D-C said:
... I was hoping to go cheap on the power supply

The PSU is the one aspect of your computer you should never, ever go cheap on.  Best not to go cheap on a lot of them but PSU especially.

 

I know you said you're buying retail and not online but here is an example of a quality model that will fill your needs for a good price.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703017