In this video, I compare two Chromebooks with similar internals, save one difference: RAM. The HP Chromebook 14 comes with 4B (on this model, anyway) while the Acer C720P comes with 2GB.
All in all, you’ll see that there is a performance difference. However, depending on your use-case, the difference may not affect you at all.
Check out the video to see how both machines fare!