Axiom 4GB DDR3-1600 ECC RDIMM for IBM # 49Y1558, 49Y1559, 39U4459 - 4 GB - DDR3 SDRAM - 1600 MHz DDR3-1600/PC3-12800 - ECC - Registered - 240-pin - DIMM

Axiom's DDR3 memory modules, offering breakthroughs in speed and power, are now available. DDR3 has set out to be the new standard in the industry and Axiom has designed and engineered these modules to set that standard. With rigorous testing and endless research and development, you can trust Axiom DDR3's to be the best memory in the market today.

DDR3 offers:

• Powerful performance - DDR3 nearly doubles the speed of DDR2 by offering faster data rates.
• Low Power Consumption - DDR3 operates on a reduced supply voltage thanks to its efficient design.
• Higher Bandwidth and Density - DDR3 allows better computer performance thanks to the fastest data transfer rates available.