ohhh. i miss read something. i thought the superclocked was the 2gb. XD
sorry about that.
the 1gb vs the 2gb discussion depends on the game.
in most games you will get a slightly boost by having 2gb, in some games you get a noticeable boost.
if you are running with multiple monitors it's gonna be a huge difference.
by having a superclocked card you have a good overclock without you need to do anything.
but you can easily do that yourself, and even get a better overclock with not much hazel.
i will advice you to search "msi afterburner tutorial" on youtube to learn how to do it.
it's easy and fun.
i just found this benchmark.
here you can clearly see what i mean. higher resolution is required to make a difference.
you can see that 1680 x 1050 makes no difference, but 1920 x 1080 had a slightly boost.
multiple monitors make higher resolution. so you can imagen that 3840 x 1080 is gonna be a huge difference.