Yes, i have to do it.

[spiral vapor]

i have 1 8gb cl9 module and i'm thinking maybe i can get 2x4gb same ram kit and use 1 stick and 2 4gb stick in same computer

[slim echo]

For DDR3? Yes, using three channels will shift it all back to single-channel mode. You lose performance overall. It's whether you want capacity, or lower latency

[spiral vapor]

i need more gbs of ram

[slim echo]

Then put the third stick in.

[spiral vapor]

that was an clear answer

thank you