ok so my mother board has 4 slots for ram, and it can hold up to 16gigs but i dont kno if i should get (4) 2 gig sticks or if i should wait and get (4) 4 gig sticks. i really want the 16 gigs but i deff cant afford that right now.. so what should i do? is there any cheap 4 gig sticks anyone can find? the ones i found where$ 179.98 a piece and thats way to much for my pockets right now..