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DDR3L-RS Reducing DRAM Power Consumption in Standby Standard Page Save
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DDR3L-RS: Reducing DRAM Power Consumption in Standby

Kris Kido   |   January 8, 2013   |   All Products

Standby power savings are becoming increasingly important as computing devices continue to shrink leaving less room for large batteries, and come loaded with advanced features such as instant-on and Microsoft’s Connected Standby. DDR3L-RS (formerly referred to as DDR3Lm) is the first mainstream PC DRAM with a focus on reducing IDD6, doing so by cutting in half the self refresh rate at room temperature (standby conditions) and by selecting lower IDD6 devices. First, TCSR (Temperature Compensated Self Refresh) is enabled at 45C which reduces the self-refresh rate from 1x to 1/2x rate. Secondly, the devices are screened and sorted by the IDD6 value through a proprietary screening process and the lower IDD6 devices are classified as DDR3L-RS.

So—what does that mean? Well, for a 4GB system running the DDR3L-RS devices, the power is 37.6mW typical at 25C which means that the DDR3L-RS can provide up to 40% longer battery life in the standby condition depending on usage case as compared to standard commodity DRAM. That’s huge. These devices are fully backward compatible to DDR3, allowing system architects to design power-optimized computing devices cost effectively without compromising performance or reliability.  And because of this backward compatibility, DDR3L-RS is supported by all of the major enablers that currently support DDR3L today. It’s quickly becoming the memory of choice for the ultrathin computing category, including Intel Ultrabooks and ultrathin laptops, convertibles and tablets—across most operating systems including Windows, Windows RT, Android and more.

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