First one says max. RAM capacity is 32 GB (8 X 4GB) and second spec says 64 GB (8 X 8GB). We wan to be sure as 8 GB DDR2 cards are quite expensive. Can you please let us know which spec to follow. It would be better if you can give details of RAM cards to upgrade to the max. capacity for both HP Proliant DL380 and DL580 G5 servers.