George Ou did a performance comparison between Microsoft Office and Open Office a while back already, still worthwhile mentioning I think…
The quote says it all :
It doesn’t matter how fast the CPU is, OpenOffice is simply bloated.
In my last blog, where I did a high-level technical evaluation of Microsoft Office 2003 and OpenOffice.org 2.0, I showed that OpenOffice was a memory and resource hog. Contrary to popular belief (among Open Source advocates), Microsoft Office came out very lean and fast while OpenOffice.org Office Suite was just the opposite. Some couldn’t accept the numbers and complained that the Task Manager numbers may be inaccurate and hiding memory usage. They demanded more proof, so here it is. …
CHeck out the whole post over on George’s Blog