jim.sikberg said: Shektron said: You can’t just pick one over the other – whether your system need DDR3 or DDR4 is decided by your CPU and motherboard – your CPU is a 4th generation chip, so you’ll need DDR3 RAM. DDR4 RAM will physically not fit in your motherboard. So if I buy a new motherboard that can support DDR4 should I go with it or stick with DDR3? Then you’ll also have to consider CPU-motherboard compatibility. Basically, if you want DDR4 RAM, you’ll need to upgrade the CPU, motherboard and the RAM together, to something more modern. Intel 6th gen and above, and AMD’s Ryzen processors work with DDR4 memory.