So a buddy of mine recently got a pc for Christmas. There is something I'm trying to understand. He has an HD 4000 graphics. But he also only has 4 GB of RAM. I read somewhere that since HD graphcs have no dedication, they start using your RAM. When my buddy starts playing a game and a message pops up that he is low on memory and has to shut the game down. Does that mean he needs more RAM cause the GPU is leaching to much off of it? Would upgrading his PC to 8GB of RAM fix this?