Hello. My question is in regards to potential laptop performance. Please forgive my ignorance in advance for most of this is quite new to me. I am wanting to upgrade the ddr3 ram in my laptop and also have an 850 Samsung ssd installed. My first question is this. What is the difference between single channel memory and duel channel memory? I ask because I was told my new laptop has single channel. 8 gigs of ddr3 to be exact. I have little doubt that I will see some performance increase with a ssd upgrade however due to my lack of understanding with certain aspects of computing I'm very unsure of the memory upgrade. My system specs are the following. amd fx 8800p w/8 gigs system memory. 1 tb hd. r7 intergrated gpu and an r9 385 gpu 4 gigs ddr5 memory. model is a Lenovo y700 available only at best buy. Also I was told it has an m.2 slot for a m.2 ssd but it will not be reconized by the system due to Lenovo not providing the traffic lanes for it to work whitch is what made me decide to go with the sata type ssd. Last I was told to go with 1600 ddr3 stick and not the 2133 stick because again even though the computers cpu will work with it for reasons unknown to me it will also not recognize it pretty much being a waste of money. Any insight would be extremely helpful. thank you doug.