for comparison here is the psp versions of the 1000, 2000 and 3000

http://tech2.in.com/reviews/psp-games/psp-3000/54201/0
Upgrade to 2000: It was slimmer and lighter (hence the name PSP slim), and it had some much needed extra functions like USB charging, TV out for videos and games, faster loading times
Upgrade to 3000: It's exactly the same size and dimensions. But on a closer look you notice the subtle changes—
- The Home button is now the PlayStation button with the classic PlayStation logo.
- There's a mic placed right next to the volume control for the new Skype function in the PSP 3000.
- The D-pad is a lot better this time around, which I suspect would make playing fighting games a lot easier than its predecessors.
- It can now output games via Composite cable as well, unlike the PSP 2000, which requires a component cable to output games.
But you notice the biggest change from the previous PSP's only after you turn it on — It's spanking new screen.










