Memory Type: DDR2 PC2-5300, DDR2 (ECC)
Maximum Memory: 64GB
Slots: 16
Each memory slot can hold DDR2 PC2-5300 with a maximum of 4GB per slot.*
*Not to exceed manufacturer supported memory.
Additionally, each memory board supports a maximum of 8 ranks of memory (four of our 2GB or 4GB DR parts).
No more than four 2GB or 4GB DR Crucial parts can be installed in each memory board at a time.Installed in pairs of modules.This server supports a maximum of 4 memory boards. Each board has six slots configured as 3 banks of 2.
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