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IFTLE
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re: TSVs help Samsung cut DRAM power by 40%
IFTLE   12/12/2010 4:41:16 PM
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Met with Samsung personnel this past week. This is the frst of their 3D TSV products to be introduced. It us a simple 2 chip connection (i.e. 2 4Gb DRAMs). Connections are done in copper. Report is they will not persue tungsten for mechanical and electrical reasons. See more and keep abreast of all things 3DIC at "Insights From the Leadng Edge"...

krisi
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re: TSVs help Samsung cut DRAM power by 40%
krisi   12/10/2010 11:22:27 PM
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@newcoding: If we assume that half of the power is dissipated in active cells and half in interconnects to achieve 40% reduction in total power dissipation one would have to shrink interconnect portion by an order of magnitude, sounds too good to be true...Kris

KB3001
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re: TSVs help Samsung cut DRAM power by 40%
KB3001   12/8/2010 7:15:01 PM
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I agree. It's not just a matter of using TSVs.

IFTLE
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re: TSVs help Samsung cut DRAM power by 40%
IFTLE   12/8/2010 6:00:15 PM
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This was predicted and to be expected if one followed the Elpida/UMC announcement months ago. Samsung response was overdue. Samsung has been working on this technology for more than 5 yrs. Follow all 3DIC tecnology advancements on IFTLE (Insights from the leading edge) at Solid State Technology web page....

krisi
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re: TSVs help Samsung cut DRAM power by 40%
krisi   12/7/2010 11:38:35 PM
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I am having hard time believing that TSV shaves 40% of DRAM power dissipation...sure, better interconnects help but so much power reduction? There must be something else at play here...Kris

Sheetal.Pandey
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re: TSVs help Samsung cut DRAM power by 40%
Sheetal.Pandey   12/7/2010 8:44:21 PM
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Well its a great news for electronics industry if Samsung has come up with DRAMs that cuts power consumption by 40% looking at memory being the most important part of the design. They seems to be pretty confident on TSV technology. When the industry start using it the pros and cons would come out. But for now it really brings advantages on the table.

docdivakar
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re: TSVs help Samsung cut DRAM power by 40%
docdivakar   12/7/2010 6:10:48 PM
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@Peter Clarke: thanks for the expose on this. At the last Global Foundries Technology Conference at Santa Clara, one of the Samsung spokesperson was apparently alluding to the product announcement we know now as the 8Gb RDIMM. It looks like this is one of the first products to go into production using the TSV technology. Given the multitude of problems one can encounter in 3D stacks (like • mechanical stability, CTE mismatch between Cu and Si, • thermal management, 3D routing & floor planning, etc) I would be curious to know what the yields are and the number of dice in the stack. Better yet, I would love to get my hands on one of these RDIMMS and do a teardown! Dr. MP Divakar



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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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