The Psp 3000 has a built in microphone, 33% thinner,video out, more ram, and a brighter screen. The excess ram is not really that big a deal seeing as most launch games seemed software restrained from using it; but most new games use it (larger cach allows the disk drive to not be used as much, which cuts down on battery drain)and the 333mhz versus the software locked 222 mhz originally imposed by sony. The tv out allows you to play your psp games on a tv with progressive scan (or standard cables as well). All in all it is a nice upgrade for a solid portable; the only downside is you are going to need a lot more memory for downloadable games. You can get a 8 gig pro duo for like 24 dollars on amazon.com.
Don't believe me check out these links
www.nlgaming.com/article/11/sony-psp-slim-review/
moretechnews.blogspot.com/2007/.../psp-clock-speed-increases.html
