Considering a Computer Upgrade

[MiRai]

Another question.

Currently I have 3 sticks of 2 GB RAM. My mother board has 6 slots, so 3 slots are unused.

If I bought the GSkill RAM above, which is 3 x 4 GB = 12 GB, could I just plug them into the 3 empty slots?

That would bring my total to 18 GB.

I never recommend mixing and matching memory, it can have a negative impact on your setup.

the nvidia 460 (1G) is the sweet spot for bang for buck.

560 Ti replaces the 460, just came out last week.