I've just been given the gaming PC for Christmas and I need to upgrade it to 8 gigabytes of RAM however I don't know what one to get and I have heard but if I get a wrong one then it won't fit and I don't want to have to go through the struggle of getting a refund and having to send it back so please can someone who knows computer as well ask me simple questions that I can just look up up on speecy so then someone can easily help you find an 8 gigabyte RAM that will fit into my PC thank you