basically on your ram youll have the model number for example CMZ8GX3M2A1600C9 at the end its tells you its 1600 mhz and c9 is your latency the lower number the better as it works faster with less of a delay
wont make much of a difference but its good to know , and if you want a better fps you would be much better getting a new up to date graphics card as that would be the key ara to improve