Micron (Boise, Ida.) has expanded its Aspen Memory portfolio, by adding 1-Gb DDR3 modules operating at 1.35-volts. It also rolled out 2-Gb DDR2 modules operating at 1.5-volts.

The products are said to provide the server industry with the lowest-voltage DDR2 and DDR3 memories. Standard DDR3 memory technology operates at 1.5-volts, where DDR2 memory operates at 1.8-volts.

''The trend in energy-efficient technology is especially important for data centers because they are always running 24 hours a day, seven days a week,'' said Brian Shirley, vice president of Micron's Memory Group, in a statement.

''Until recently, IT and data center managers primarily looked at ways to reduce power consumption with energy efficient processors and power supplies, but they hadn't looked at the additional savings they can achieve with low-voltage memory,'' he said.

Micron's 1.35-volt DDR3 Aspen Memory server modules will be available in densities up to 4 GBs using 1-Gbit chips and use 21 percent less power in comparison to standard 1.5-volt, 1-Gb DDR3 memory modules.

Additionally, Micron's new 2-Gb GB 1.5-volt DDR2 memory modules achieve a 58 percent power reduction over standard 1 Gb-based 8 GB 1.8-volt DDR2 memory modules.