Is it possible to add more DDR2 memory on a personal computer via pci expansion board?
It depends on what chassis you have, a 750W (750 Watt Power Supply) or 1KW (1000 Watt Power Supply) chassis. The 750W chassis will take up to 32GB total using the existing 8 slots (4GB in each slot). The memory expansion board (called a memory riser board) will only work in the 1KW chassis, which allows for an additional 8 slots and 32GB (4GB in each slot). This lets you use up to 64GB. If you haven’t filled the first 8 slots with memory, then you won’t need the memory expansion board. So save yourself some money unless it’s full of RAM already. ALSO: I’m assuming you have a 64-bit operating system (XP or Vista 64-bit), which is required to recognize more than 4GB or RAM. If you’re looking to buy RAM, see the link below for Dell Precision 690 memory modules for cheap: Notes from Dell’s Precision 690 Specs Page: The total amount of available memory will be less than 4GB. The amount less depends on the actual system configuration. To fully utilize 4GB or more of memory requires a 64-bit
