Best GPU for around $70?

Hello,

I've got a nice gaming rig at college but back at my parents house I have my old pc with a 4850 which just died on me and I'm looking to replace it with something cheap. My budget is around $70 which from what I've checked seems to be enough to get something slightly more powerful than my old 4850.

There are a bunch of cards around the $70 mark and I'm not sure what is best. I don't need it for much, just some very light gaming with games like Runes of Magic and CSS (both of which ran fine with the 4850).

Thank you for any suggestions!

Here is a link to the specs of the old card: http://www.asus.com/Graphics_Cards/EAH4850HTDI512M/#specifications

Could grab a 7770GHz at around that price. I think it is a very good card.

I live in another country, and so it is a little more expensive than I anticipated. I think GPU prices have increased over the holiday season.

http://pcpartpicker.com/part/sapphire-video-card-100358l

7790 which is less than $90:

http://pcpartpicker.com/part/powercolor-video-card-ax77901gbd5dhoc

7770 or 7790

Or, look on craigslist for a 560TI/570! :D I found a GTX 570 in my area for like 100.