im going to be jumping on the core i7 train but im in australia so things are a bit more expensive , so i was going to go for a core i7 920, maybe gigabyte board , but im thinking of been tight and going for a G.SKILL 3GB (3 x 1GB) DDR3 1600 (PC3 12800) Triple Channel Kit to start with , and then later down the track get another 3gb kit and have 6gb, would (3 x 1GB) be enough to start with ?

or shall i just pay bit more and get G.SKILL 6GB (3 x 2GB) DDR3 1333 (PC3 10666) Triple Channel Kit to start with ?

i think i would rather have 1600 mhz ddr3, im going to be water cooling and oc'ing the sucker as far as she goes