Simple. There's supported and then you have "you are on your own."
A 5 year old PC is in that later category.
I bought a Gateway pc in 1999 with 128 MB of ram. When I asked the rep just this past year about upgrading the ram, he said the most I could ever put on this TABOR-III motherboard is 384 MB. But I just put in a total of 512 MB (after consulting with a friend) and the computer is running great! Does anyone have any comments or suggestions on why I should not be able to do this, why I shouldn't do this, or why it just plain doesn't make sense?