I have the 900HA model
160GB HDD (Not solid state like the other eee's)
1.6Ghz Intel Atom (Seems like it can be pushed up to 1.8Ghz fairly easily, though)
Screen res is 1024x600
1GB RAM
and the features most of the other eee's have, built in camera etc.
I am making this post on it, I personally love it. The keyboard takes abit of getting used to, but once you've used it for a while it sinks in after no time.
Oh yeah, it has WinXP on it, but I am also dual booting Ubuntu-eee