Volante, where did/are you coming up with 3X2? OWC doesn't even generally sell it in other than pairs?

Do it right,,, get 4X2,,, fill up both front slots on each riser with them. You're only talking one extra 2g module to do it properly. Sell the stock 1g's back to OWC if it makes it financially easier. Or sell the stock to me. (pm me)