May I ask anyone if for gaming, is there any major different between 4gb and 8gb ram? I wish Microsoft can offer 128GB model with 8gb ram but they don't. The 256gb model with 8gb is too much ($300 more compare to 128gb 4gb ram model). If the increased 8gb ram model won't benefit the gaming fps, I will buy 128gb model then. Thanks for the advise.