$1100 US Dollars for that, or some other dollar, like AUS?
I'm not pushing an argument here. Everyone is free to upgrade as they want. I upgraded from 4 GB because I felt memory pressure with my RAM filling up all the time.
Also, mysql is a stupid service. It eats 1 GB of ram because I have a total of 16 on this machine, so you really shouldn't count it towards the total. But the least thing you want is that you computer starts to crawl after closing a game because Windows is trying to recover all the ram that was paged out.