I have Corsair XMS3 1600 2x4GB, so it's two 4gb modules
If I have several tabs open in Chrome then they take 1.3-1.8gb and 52% of the 8gb is used, If I play Crysis2 this popup appears:
Closing Chrome puts the memory usage at around 30% I can then play Crysis 2 without popup from windows 7.
I had pagefile.sys 3.2gb and hiberfile.sys 8gb, now I removed hiber and put pagefile to 8GB...
OS is Windows 64 ultimate and SSD C300 64gb Crucial now 8gb pagefile and now there is 8gb free space on the SSD.