OWC 4GB DDR3 1066 PC3-8500 CL7 2Rx8 240-pin 1.5V Non-ECC UDIMM memory upgrade

Compatible Lenovo ThinkCentre upgrade

This 4GB DDR3 module is built for Lenovo ThinkCentre M58p SFF and M58p Tower systems. It delivers a straightforward capacity increase for older workstations that still use DDR3 memory. The single DIMM fits directly into an available 240-pin slot without configuration changes.

JEDEC-standard thermals and power

The module runs at the standard 1.5V DDR3 voltage with CL7 latency at 1066 MHz. As an unbuffered non-ECC DIMM without a heat spreader, it operates within normal desktop thermal limits and adds minimal power draw to the system. No active cooling or special airflow is required beyond the case fans already present.

Plug-in capacity for two form factors

The 240-pin UDIMM installs in either the small-form-factor or tower chassis of the supported ThinkCentre models. It leaves remaining slots free for additional matched modules if the board allows. Builders needing ECC, registered memory or speeds beyond DDR3 1066 should look elsewhere.