Hi, I have been trying to figure this out on my own, but not sure where to go next. I want to buy an Z820 to run Symphony 6.5. I hate having HP add the RAM upgrade since they charge a ton for it. I usually buy from Crucial, but on this model, I cannot get the exact specifics on which RAM chips to buy. I know the Z820 uses DDR3 1600 ECC RAM, but there are a number of other options that Crucial offers. Single rank, duel rank, unbuffered, registered.
Anyone know the specs?