that really isnt that bad look at my current one in the first post you think its better?
You should definitely upgrade..Your current seems pretty terrible.
I'm not saying the first one that you are considering upgrading to is bad, it's just gonna be outdated very soon at the rate technology is going so I would suggest you save up and get a very advanced gfx card instead of buying a second rate card right now.
Also did you make sure your power suppy can handle the Voltage req. for a new graphics card?