DDR3 1600 Hz with 1333Hz

[sushant88delhi]

I recently installed corsair DDR3 4GB 1333 Hz RAM to my laptop. It has another slot of 4GB. I want to know whether I can install DDR3 4GB 1600 Hz RAM with the first one?

 

[h3sham]

get a 1333 to use it in dual channel mode

 

[keithmfr]

You need to use RAM with the same frequency. If you don't it can lead to compatibility issues. Buy the same RAM you just recently installed in your laptop.