Conclusion - in general, let me explain to you that the difference in performance in general between RAM with a fast frequency and another RAM with a lower frequency will not be large or influential to a large degree, but in general it is better in any case that you buy a RAM with a good frequency and therefore 1600 will be very good. The second element, which is the size, buy the appropriate size for your games and note that the internal graphics card is holding a portion of the RAM, if you have an internal graphics card, I advise you to take this into account, if the internal card is 512 and withdraws 1.5 GB of RAM, it is better to add 1.5 GB of RAM to what you will buy until the equation is complete.