Aww jebus... as i said, 2 of the largest modules you can get... Do NOT run 4 sticks... this is not going to end well, you're going to suffer from performance penalties. you stated that you couldn't afford the 2x16GB 3200mhz DDR4 modules... that's why you were initially getting 2400mhz. I suggested the compromise of 3200mhz 2x8gb just to fit within budget. If you seriously want to upgrade... send the 2x8gb modules back and grab 2x16gb 3200mhz modules. You will WANT 3200mhz ram on ryzen systems, anything lower than 2933mhz (3200mhz being the ideal) and you're going to see massive degradation in performance that you won't be happy with.