Well 16GB is becoming the norm, my guess is 2018 that 32GB will be the norm by the end of the year, 2 was the norm thru about 2010, 4GB "was all you'll ever need' thru 2012/13 then 8GB became the call, and we already have games using 8GB, saw something about one calling for 12GB before the end of the year. GPU DRAM is growing, so system DRAM will be growing also