Microsoft imposed a soft limit of 16GB system RAM on their Windows 7 home OSes, because they didn't want them to be used at the enterprise level. (In comparison, Windows Server 2008R2 Enterprise can handle up to 128 GB of RAM total.)
You're right, I wrote that incorrectly two posts up; the VRAM doesn't count toward the total system cap, but the system RAM can always loan some over to the video card setup when it's short (or non existent, as is the case with on board graphics.) VRAM is faster but simpler and can never be used as system RAM. And I definitely did have some memory related blue screens when I first put my shiny new video card in this system
But that was Microsoft's or AMD's fault, and the blue screens stopped once they patched whatever memory issue it was having.
Honestly, unless you're using your computer as an SQL server, anything more than 8GB is overkill for the majority of things. The only reason I have 16GB of system memory is because I got a great deal off NewEgg. Edited, Mar 30th 2013 10:47am by catwho