It is not worthwhile to upgrade. The difference between the Ryzen 7 1700 and the Ryzen 7 2700 is small, the slightly higher clock and performance improvement do

It is not worthwhile to upgrade. The difference between the Ryzen 7 1700 and the Ryzen 7 2700 is small, the slightly higher clock and performance improvement does not warrant an upgrade. The new processors are just a new nice option if you are not already on a current cpu, like an old FX or a dual core intel. Your old memory will work with your new cpu, to 99%. AMD improved memory compatibility with software updates, and the memory support in the 2000 line is supposed to be better again. If your ram is slower than DDR4-2666 you lose some performance compared to what you could have, but that was already true for the 1700 - DDR4-3000 is a good minimal ram speed target, as Ryzen profits a lot from being combined with faster ram.