I pulled out my own ram to cross reference and I am guessing this would work for my comp, the sticker code is exactly the same so (in my comp has 2 512 chips too) and I have 2 open slots soooo Im hoping this will be the 'double power!' I NEED this so I will be bidding high and later in the auction. (i hate timer campers LOL). All i wanta know is how soon can they be shipped?