Ram change lights 3 and 4

Hi, In my Dell percision t5600 I have 4 gb of ram it causes a lot of bottle necks so ive changed it out for a set of 16gb sticks witch i believe are the correct sticks but i plug them in and i have the error lights of 3 and 4 no input to my monoter or to my mouse or keyboard any suggeswtions as to why this aint working?,

Below are images of the new ram and it not booting