SK hynix Unbuffered Small Outline DDR2 SDRAM DIMMs are low power, high-speed operation memory modules that use DDR2 SDRAM devices. This unbuffered DDR3 SDRAM SODIMM is intended for use as main memory when installed in systems such as mobile personal computers. This particular memory kit is 1GB and operates at 1.8V. It features a 667MHz clock and a 166MHz memory clock. This Hynix PC2-5300 SO-DIMM memory ensures stable performance, facilitating an optimal computing experience on your personal computer.