Hello All - I am wanting to upgrade my MoBo's memory to it's full 8GB's max, since it has only 4GB's right now. I want to use - G.SKILL Ripjaws X (2 x 4GB) DDR3 1333 Memory, in place of my 2 matching sticks of Crucial that are only DDR3 1066 (2x2GB). My OS is Win 7 Pro 64Bit and my CPU is an Intel 3.0 E8400, and my PSU is an Antec VP-450. Thanks to all who reply and for your help, Have a Great Afternoon....