Guaranteed compatible upgrades for:

Toshiba Satellite M640 Series M640-ST3N01x (PSMPDU-005003)


System Specifications
Maximum Memory:
  • 8GB
Expansion:
  • 2 Sockets
Standard Memory:
  • 2GB (Removable) or
  • 4GB (Removable) or
  • 6GB (Removable)
CPU/Chipset:
  • Intel Core i5 2.3 GHz Intel HM65
Bus Architecture:
  • SSD - SATA 2.5-inch 9.5mm; USB 2.0/3.x Type-A
Mfr's System P/N's:
  • PSMPDU-005003
Upgrade Path:
  • Up to 8GB can be reached using 4GB modules.