I play battlefield 4, skyrim, and fallout new vegas. Will I need a 8gb 980 or should i just grab the 4gb? I ask this because My skyrim is the game I play the most, and I mod the crap out of it. I use K ENB pure light, several texture mods that change roads, signs, and flora, many character texture mods, etc etc. It turns Skyrim to a very VERY demanding game.