Now I'm confused. I thought DDR3 should always be installed in matching pairs? Yanking the 2 x 2GB OEM sticks out and adding 2 x 4GB seems like the best way to go, since that leaves 2 slots empty for the future (or leave original sticks for a total of 10GB). Don't know if I will ever need to run 16GB or RAM though. What about keeping the 2 x 1GB OEM sticks and adding 2 x 2gb. That would give me 6GB. If I needed more later, I pull the 2 x 1GB Dell sticks. My braing hurts more...
It's not confusing nor difficult to understand at all. DDR3
does not have to run in pairs. It will run however you have them. For optimal performance you want to run it in pairs, but of other configurations it will run just fine.
If you get 2 x 2GB OEM you do not have to yank it out. Simply add 2 x 4GB, and you'll have a total of 12GB of RAM. Now if you want 16GB, then you'll have to yank out the OEM sticks.
If you get 2 x 1GB OEM, add 2 x 4GB to get 10GB total RAM. If you ever want more, then yank out the OEM sticks. With 2 x 1GB you could get 2 x 2GB for a total of 6GB, but you'll have to yank out the OEM sticks if you want more.
He can run 2x1GB (or 2x2GB) plus 1x4GB, but why would he? It's not any cheaper. So he should just get 2x1GB from Dell, avoid all of the ridiculous charges for Dell "special jacked up price memory", and install 2x4GB in addition to the 2x1GB. If he has any trouble, he can just remove the 2GB as throwaway.
Why are you acting like we are saying different things, because we're not.
He should get the cheapest RAM option from Dell. That only makes sense.
He can run memory in odd numbered configurations. It's possible. That was my point, and no one addressed that issue directly.
He should get 2x4GB on his own.
Your first sentence doesn't make any sense. The upgrade to 4GB from Dell (+$60) is more expensive than getting the 2GB option and adding 4GB on his own, whether that 4GB be a single stick or dual sticks.