Oh ok, thanks. I just ordered the 1 x 8GB Team DDR3 1600MHz Laptop RAM from Newegg can't wait to see the improvement in my machine. Soon imma order another one, but for now im going to put my 2Gb 1600MHz stick with the 8Gb 1600MHz for total of 10GB RAM.
If I recall correctly, but I might be mistaken, dual channel takes advantage of paired RAM slots and modules.
Let's say, you have 4 RAM slots, the paired RAM slots would be slot #1 with slot #3 and slot #2 with slot #4, so to take advantage of dual channel you have to put 2 same RAM modules in the paired slots, e.g. slot #1 & #3. That's how dual channel should work, or at least that's how it should be in desktops.
The fastest ram is the kingston Hyper-X 2133mhz, it's a bit overkill and Clevo's don't like it, but I believe MSI and alienware can run 2 sticks at stock speeds, but struggle a little with 4.
Dual channel does interleave data like a hard drive raid array, you can stack mutliple dimms on each channel, but you only get a bandwidth increase equal to the number of channels the chipset supports.
For example: Z77 = 2, X59 = 3, X79 = 4.
You need to run 1 and 3 or 2 and 4 to get dual channel, though they are usually paired like that in notebooks so that 1 and 3 (as the chipset) are together.