Memory Type: DDR2 PC2-5300, DDR2 (non-ECC)
Maximum Memory: 4GB
This system utilizes the 2.0GHz Intel Core 2 Duo processor and the nVidia GeForce 9400M graphics processor
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