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Kristin Lewotsky
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re: What Facebook really needs from the memory sector
Kristin Lewotsky   3/14/2013 12:19:33 AM
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Energy savings in the data center is getting to be a big deal. IBM, for example, has developed a gizmo called the MMT. It's a robotic sensor tower that prowls the data center to map temperature and humidity to find savings. There's a lot of discussion about just how cool it in your center really needs to be – Given the size of some of these installations, raising the temperature even a degree or two can make a big difference.

de_la_rosa
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re: What Facebook really needs from the memory sector
de_la_rosa   3/13/2013 10:50:08 AM
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I read somewhere, that every photo on Facebook corresponds to as much energy as boiling a kettle. Would have been interesting to ask Facebook what they doing to reduce energy consumption..



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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