OWC 4GB DDR3 1333 PC3-10600 CL9 2Rx8 204-pin 1.5V SODIMM for ThinkPad Edge E425 E520 E525

ThinkPad Edge E425 E520 E525 Memory Upgrade

This 4GB DDR3 SODIMM is built for Lenovo ThinkPad Edge models E425, E520 and E525. It adds a single 4GB module to a compatible laptop or mini PC. The part is new and carries JEDEC and RoHS compliance for a warranty-safe upgrade. Buyers who need more than 4GB of total memory or who own a different laptop series should look elsewhere.

Installation Ease And Common Issues

The 204-pin SODIMM format fits the standard memory slot in the listed ThinkPad Edge systems. Installation is a straightforward DIY task that typically requires only a screwdriver to open the access panel. The most common issue is mixing modules of different speeds or capacities, which can prevent the system from booting or force it to run at the lowest common specification.

Deciding Specification — DDR3 1333 PC3-10600

The module runs at DDR3 1333 (PC3-10600) with CL9 latency at 1.5V. This speed and voltage combination is the single factor that determines whether the upgrade will work in your ThinkPad Edge E425, E520 or E525. Systems requiring a different DDR generation, a higher or lower voltage, or a different pin count will not accept this module.