If my RAM is DDR3 can I ONLY upgrade to DDR3?

lister said:

Yeah, it keeps going up. Im doing the sniper strategy at the end. Whats interesting is how much this is going up. Looks like 4 x 2G RAM Slots are going to be sold for $45 - seems high or is that cheap? This RAM I am buying could easily be like 4/ 5 years old....?

Doesn't sound like a great deal. Post a link.

Play it safe and get the Corsair Vengeance mems. It's the same price at Newegg (give or take a dollar) as Ebay. Also get the faster ones than what you are running for stoutness (1333 on 1600 for example).

lister said:

I think the answer to that is yes....right? In fact it is DDR3 Unbuffered ECC Memory - so that is the exact type that I must upgrade right? Thanks

Assuming that the RAM is for the laptop in your specs, the RAM is 204 pin NON-ECC DDR3 SODIMMs. (Your i5-560M vPro CPU doesn't support ECC, even if ECC SODIMMs exist. I've never seen any.)

Desktop RAM (240 pin DDR3) won't do much for you.