So I had a laptop which by default, has one of the slot occupied with a 2 GB stick.
Would it be a problem if I fill the 2nd slot with a 4 GB stick?
Note : The only reason I'm asking this because I rarely ever heard people suggesting 6 GB RAM. They always suggest 4 or 8 GB. Which makes me inclined to believe that there is something wrong with 6 GB.
The 6GB issue is only relevant on desktops running duel channel mode. You need 2, 4, 8, 16, 32GB configs to benefit from duel channel performance. Tri channel board, older I7 socket 1366, you need 3, 6, 12 etc to benefit from tri channel performance.
BUT laptops do not have ANY duel or tri channel configs, so 6 GB is perfect for you if you only have one slot available.
Get a 4GB stick. Just check that your laptops support a single 4GB chip.
I couldn't agree more. 6GB in single channel beats 4GB in dual channel at the moment more than 4GB memory is needed by the system and the programs.
If I were you, I'd still shoot for the 8GB, and get the best from both worlds.
Hey, if you know a friendly computer shop, you can take your laptop in, put in a 2GB module, or two 4GB modules , and check if dual channel works. If it doesn't, and 6GB is enough for you, then buy only one 4GB module.
If the shop doesn't want to help you with this, then it's not a friendly one.
BTW, you can use the 30-day version of "Everest" software to check if you are using dual channel:
Hey, now that I see this screenshot, I had the idea, that it will tell you, if dual channel is supported, even if you have only one memory module at the moment. That Memory Controller "Type" field seems to be the one you need to check out (and "Active Mode" should be the one to show the actual situation).