im considering adding 1 more gb of memory to my system. will i see any improvement? its not that 2 gb isnt enough, its plenty. however for less than 40 bucks if it will make my system even faster, it would be worth it. currently i have an AMD 4200+ x2, nvidia 7900 GS, and 2 GB of ram. Also could it slow my system down to add 1 stick of memory? right now i have 2 sticks of memory so if i add one stick will it drop it down to single channel? i have a gigabyte socket AM2 motherboard.