2GB DDR3 1600MHz & 4GB DDR3 1333MHz

2 posts · originally from https://geek.digit.in/community/threads/2gb-ddr3-1600mhz-4gb-ddr3-1333mhz.168808/

Hello guys,
I have bought Lenovo G580 (59-324008) today.
It is having 2GB DDR3 1600MHz RAM.
And I upgraded the system with another 4GB DDR3 RAM having frequency of 1333MHz.

My question is will it create any bottleneck ?
Or am I going to face any problems in future due to mixing the RAMs ?

better remove the ram with 1333Mhz, coz it will bottleneck the 1600 stick, forcing it to run slower at 1333.
you should have gotten a 1600Mhz stick to be fully compatible with your existing RAM.

my advice : sell/return that 1333 stick and buy a 1600