It's a decent card depending on what you expect from it. I was able to overclock mine through the latest release of ATI tray tools from 432/396 (stock) up to 450/400. Nothing stellar, but i wanted some nice round clock numbers. I really see no point in pushing it any further. Overclocking laptop gpu's usually wont yield any real world performance gains. Why? Most aren't sufficiently cooled enough as it is, and very rarely can you monitor or modify them.
As for gaming, you'll be able to play most games, but at low resolutions and with little eye candy. But that's the trade off you make for gaming with laptops.
On a side note, I sure hope you purchased the sxga (1680 x 1050) screen upgrade. It'd sure be a waste of a gpu if you didn't 😉. But nonethless, enjoy your new purchase!
