Congrats.
It's always fun to play with new hardware.
you should see a solid improvement going from one gig of video memory to four gigs. CLOD doesn't like less then 1.5GB.
I wish you luck with the overclocking. Just be more careful than I was.
. I had the 2600k running smooth at 4.5GHz for a year and a half and one morning when I started the computer, it just told me to pi$$ off. After a solid inspection I saw the one inch whole it burned into the motherboard.
. The cpu was fried as well of course. I got myself a new Asus Sabertooth Z77 and a new i7 3770k and got it running again. Now I'll be a bit more conservative with the overclocking.