I'll agree theres no doubt 8gb will be used for games but there is no way there is only going to be 2gb free for games I would go for 5gn at the very minimum.
As said there could be separate hardware that runs the os ect that will leave more of the main hardware for games.
I don't know. I don't see why you would need all that for games. Look at Crysis 3 requirements. http://www.crysis.com/us/crysis-3/buy Total of 3GB, 2GB of RAM and 1GB on the video card. And that is to keep the background tasks running and the game. So saying 5GB for a game -- or any more then 3GB -- is really over kill at this point.
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