Memory Type: DDR PC2700, DDR (ECC)
Maximum Memory: 16GB
Install in matched sets of 4 modules.Memory modules within a bank must all be the same capacity. Bank one consists of DIMMs 1,2,3,4 and bank two consists of DIMMs 5,6,7,8. Each channel consists of two DIMM sockets.
How much memory your Windows OS will recognize depends on which version of Windows you are running. 32-bit versions of Windows will see (and utilize) only 3GB or 3.5GB. To utilize more memory, install a 64-bit version of your OS. More information about OS memory maximums can be found here.
Memory or DRAM is the "working" memory of the computer. It's used to store data for programs (sequences of instructions) on a temporary basis.
video - installing memory