Much of an improvment?

Just a quick question im hopping someone can help me with. Iv currently got a ATI x800 graphics card (link here) and was thinking of getting aRADEON HD4350 (link here). Too me it looks like an inprovment, but Im just not sure. I dont want to spend more then AU$100 for it because its only supposed to last me till ATI's new cards come out and I can pick this card up for AU$70 from my local computer store, so it just saves the hassel of ordering and waiting for something else. Also, I was thinking of adding another 1gb of ram to my current 1gb, would it be worth it?

Its definitely an improvement, now you can get 50 FPS on CS 1.6 instead of 30.

Just save your money until you have enough for a complete computer overhaul.

well, the main issue is, it might be 6-8 months before I could afford anything new, and even then its only a small chance I'll have the money by then. I havnt had alot of issues running things now with my current card, other then some games not starting because my pixle shaders only 2.0. I think the card Im planning on getting is 4.0.