Now my question is. Seeing that the Corsair has three channels/frequency and the Samsung has four. Will this be effecting the laptop i.e throwing it out of balance. For about NZ$40 I can get another Samsung 4GB ram chip. Is it worth doing or is there nothing to worry about.
P.S The Laptop was purchased with 16GB and came in a sealed box.
Those are just the pre-programmed SPD settings in the RAM chips, which are selectable with a proper BIOS in a machine. The G74 has a completely un-configurable BIOS so you can't select any SPD settings from any RAM. It just looks for the 667MHz 9-9-9-24 setting, and that is that. Your four sticks are all identical, as far as the G74's BIOS is concerned, so theres no need to switch, unless you've been experiencing wierd lockups/reboots?