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green_is_now
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re: Yoshida in China: What's Calxeda doing here?
green_is_now   4/5/2013 3:45:30 PM
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Why not a cisc/risc combo IC along the little indian big indian line of thought.

chanj0
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re: Yoshida in China: What's Calxeda doing here?
chanj0   4/2/2013 11:10:23 PM
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"With Boston, the ARM-based solution (1535 servers; 1.6 racks; 2 switches; its power consumption at 13kW) can offer 40 percent lower total cost of ownership, while it can be implemented in 61 percent less space, he claimed, compared to the X86-based solution (1997 servers; 4 racks; 44 switches;37kW)." Effectively, the statement implies less space and less power consumption per server compared ARM to x86. I don't quite understand the difference of number of switches - 2 vs 44. There is a movement of 64 bits ARM server. Whether it will take over x86 based server, only time can tell. Cloud based service providers may be able to shorten the time if the risk is properly handled.



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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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