Guaranteed compatible upgrades for:

IBM/Lenovo ThinkPad T520

System Specifications
Maximum Memory:
  • 8GB (Lenovo Official)
  • 16GB (Confirmed by many of our customers with the sme machine)
  • 2 Sockets
Standard Memory:
  • 2GB (Removable) or
  • 4GB (Removable) or
  • 6GB (Removable)
  • Intel Core i7 Intel QM67
  • Intel Core i5 Intel QM67
Bus Architecture:
  • Flash - SDXC; SSD - SATA 2.5-inch 9.5mm; USB 2.0/3.x Type-A
Mfr's System P/N's:
  • 4239-xxx; 4240-xxx; 4241-xxx; 4242-xxx; 4243-xxx
Upgrade Path:
  • Virtually any configuration up to 16GB can be reached using any combination of 2,4 and 8GB modules.
  • Contrary to Lenovo official specs, all i5 and i7 T520 machines can be upgraded with 16GB (8GB x2) of RAM.
  • The modules shown on this page are guaranteed compatible in this system.