I need to know what to get to upgrade my cpu. i currently have and AMD Athlon X4 860K as my cpu and my motherboard is Gigabyte F2A68HM-H. I also have DDR3 RAM I'm planning on getting an Intel i7 7700k and a MSI Pro Series Intel Z270 DDR4 USB 3 CrossFire ATX Motherboard. I'm wondering if I need to upgrade my RAM or if I can use my current RAM. I also need to know if there is anything else I need to install these parts, thanks.