240 pin, indeed. It is the RAM that came with his computer, MSI. It's nothing super fancy, just standard 4GB sticks. I'm not sure the speed of it, but he does some heavy gaming (he's buying a 16GB hyper kit). It would be compatible. On your motherboard, you should notice that there will be 2 different color slots (so maybe black and blue?). If you have 2 sticks in the black and 2 different sticks in the blue, they will work. I have 2 different RAM speeds in the computer I use all the time. It wouldn't be a bad upgrade, but definitely up to you. I know he planned on ebaying it, I just thought of you because I knew you built a computer.