<< I have read that there are lots of users who have problems with the inspiron 8100 and 512MB of crucial memory w/ 32 MB GeForce2Go card and Windows XP all together. I am running that exact combo however and have absolutely zero problems. >>
Yes, it has to do with the amount of power that the memory chip draws. That's why my 16 chip didn't work and my 8 chip did. It took a while to figure out what the problem was, but if you dig in the Dell forums (which by the way are a fabulous source of good information if you can dig thru the hype and complaints) you'll find a good thread that describes the problem. If you're upgrading the memory in your 8100 make sure that you specifically ask for the correct part number.