We just released a small benchmark system named Stresos.com
As we are using OpenSuse+KDE a lot and they stopped to support KDE3.5 (in 11.2) we were asking what should we use? KDE4 or other stuff...
As KDE4 is very imature and IMHO simply sucks....we tested a few desktops ...but the question is...how can we tell the difference in speed for our development team?
As we are using Netbeans a lot it made sense to create a Java benchmark...so here it is.
We had great fun testing different desktops with it.
We've made it open source so anyone can donwload it and extend it.
A! we are using Gnome now :)