Elpida to Ship Low Power 40nm DDR3 Chips Next Month
Posted 10/08/09 at 12:50:56 PM by Paul Lilly
Look for low-power DDR3 modules to hit retailers before the end of the year. That's because Elpida Memory today said it has finished development of its 40nm 2-gigabit (2Gb, with a lowercase 'b') DDR3 SDRAM and will ship samples next November. Mass production is slated to begin before the end of 2009.
On the manufacturing side, Elpida's smaller 40nm chips allows the company to achieve a 44 percent higher chip yield per wafer compared to 50nm, and a 100 percent yield for DDR3 products that operate at 1.6Gbps, the company said.
Elpida claims its 40nm 2Gb DDR3 chips use about two-thirds less current and support 1.2V to 1.35V operation, in addition to the DDR3 standard 1.5V. That's about a 45 percaent reduction in power consumption, which might not sound like much for a typical home user, but could add up in a server farm.

Image Credit: Elpida
Uh, math?
Submitted by jwalch.hawk on Thu, 10/08/2009 - 2:39pm
I am confused how this is a 45% power reduction. Unless I fail at reading, 2/3 less current means you're using 1/3 as much as before (so like 1A instead of 3A)... That means the current term alone is contributing to a larger drop than 45%, and it just gets even larger when the reduced voltage is also accounted for. **shrug**
The math is right
Submitted by Hamerlock on Thu, 10/08/2009 - 3:20pm
Parasitic loss across the IC could acount for 15% of the gain you should be getting.
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