Computer Memory Solutions CM10246410600SODRH 8GB DDR3 1333 SODIMM Lenovo ThinkPad X220 4287 4290 4291

Compatible ThinkPad X220 upgrade

This 8 GB DDR3 SODIMM is built for the Lenovo ThinkPad X220 models 4287, 4290 and 4291. It delivers a single 8 GB module that fits the 204-pin slot used by those laptops. The part targets owners who want to reach the platform's maximum supported memory without mixing modules. Buyers with other ThinkPad generations or desktop systems cannot use this stick.

Standard voltage and latency

The module runs at 1.5 V with CL9 9-9-9 timings at 1333 MHz. Power draw follows the DDR3 SODIMM specification for this speed and voltage, so thermals stay within the laptop's original cooling design. No heat spreader is fitted, relying on the chassis airflow that the X220 already provides. Acoustic impact is zero because the memory has no moving parts.

Simple drop-in installation

The 204-pin SO-DIMM form factor matches the factory slot exactly, requiring no adapters or BIOS changes beyond the normal memory detection. A single stick leaves the second slot free for a matching module if the user wants dual-channel later. The unbuffered, non-ECC design suits the consumer chipset in these ThinkPads. Systems that require ECC, registered DIMMs or a different pin count will not accept this module.