Though this by NO MEANS SCIENTIFIC. It is interesting that I was working on getting stuff from work available on my laptop. This includes my development environment with tomcat, apache ant, java, etc. etc. While working on this, I got everything loaded, and discovered my laptop with a Core 2 Duo processor at 2.4Ghz running Mac OS X 10.4, smoked my desktop with a Pentium D 3.4Ghz CPU, 2gb ram in both, etc. with my desktop running Linux. A clean compile of all my source code, which is fairly extensive with libraries included, took about 6 seconds on my laptop (repeated tests), while it took 12 seconds on my linux desktop running an optimized version of ant (built on gentoo linux).
I gotta say it was very interesting to see that. Now, I also gotta say, I'd love to see how my desktop would perform with a Core 2 Duo running at 2.4Ghz for a more adequate comparsion. This also doesn't account for differences in visual settings, such as the time it takes to load an application on my desktop, etc. But, it does mean my laptop is a more than viable alternative to my desktop for application development.