Crucial 2gb ddr2 533 (pc2-4200) memory upgrades for dell 640m laptop/notebook, 200-pin sodimm, unbuffered, non-ecc
The dell inspiron 640m laptop/notebook, maximum memory is 4096mb. Standard memory 1024mb removable. 2 Memory slots (2 banks of 1).
Adding the maximum amount of memory will improve performance and help extend the useful life of your system as you run increasingly demanding software applications in the future. Specification: module size: 2gb. Package: 200-pin sodimm. Configuration: 256meg x 64. Dimm type: unbuffered. Error checking: non-ecc. Speed: ddr2 533 (pc2-4200). Sdram timings: cl=4.