And you wonder why I complain about your posts? First you imply there is an issue because your GPU ram is included in that 16GB total, then you state that 16GBs is overkill.
As I stated earlier, we'll be on a different windows by the time we care about a 16Gb ram limit. Windows 8 is coming next year? 9 perhaps 3 or so years after that? 4GB is just now coming standard, so 8 (or 12GBs if your on a tri channel board) is the next step. I'm sure we can ride that till win9, assuming MS doesn't up the limit. Again, Windows 7 HP is all you need for gaming. Anything Pro or above offers can be solved with free tools already available. No need to pay for anything extra.