Ps4 is going to use 8GBS of blazing fast gddr5 unified memory clocked at 5500mhz. If you cut the vram you'll still have 6/7gb's to worry about. sony is talking crap about the os using 3.5gbs. the game can borrow it whenever it wants. So will 8 be enough for pc gamers? how much should we get? 16? 12?