I'm working on upgrading my 400MHz Sawtooth. I'd like to take it to the maximum 2 GB of RAM, but since I already made the mistake of buying high density instead of low, I thought I'd ask before making another purchase. As far as I know, these are the right specs for my machine: -PC100 (or faster) SDRAM -low density -non-ECC -max 512 MB -double sided I know I could just go to Crucial and order this, and if it weren't for a 10 year old computer, I would. I'm looking on eBay at the moment. Anything I've missed? Is there a reason why something like this wouldn't work? (besides the fact the seller says it won't?) edit: This is what I'm looking at purchasing... four sticks.