Guaranteed compatible upgrades for:
IBM/Lenovo ThinkPad T420s
System Specifications
Maximum Memory:
- 8GB (Lenovo official)
- 16GB (Confirmed by many of our customers)
Expansion:
- 2 Sockets
Standard Memory:
- 2GB (Removable) or
- 4GB (Removable)
CPU/Chipset:
- Intel Core i5 Intel QM67
Bus Architecture:
- Flash - SDXC; SSD - SATA 2.5-inch 7mm; USB 2.0/3.x Type-A
Mfr's System P/N's:
- 4170-xxx; 4171-xxx; 4173-xxx; 4174-xxx
Upgrade Path:
- Virtually any configuration up to 16GB can be reached using any combination of 4, and 8GB modules.
Comments:
- 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.