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Micron confirms support for phase-change memory

7/30/2010 05:14 PM EDT
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Helicopter
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re: Micron confirms support for phase-change memory
Helicopter   8/3/2010 3:41:01 AM
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Micron, on their website already has 2x nm SLC NAND capable of 300k cycles and the future story continues to look good for NAND. It looks like due to its large die size and temperature limitations, PCM is destined for niche markets

greenpattern
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re: Micron confirms support for phase-change memory
greenpattern   8/2/2010 4:10:19 PM
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It doesn't bode well for PCM if even Mr. Doller considers it "expensive," but if we carry the cost per bit argument further, flash won't win out over HDD. But there are other considerations indirectly related to cost, like power consumption.

Robotics Developer
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re: Micron confirms support for phase-change memory
Robotics Developer   8/2/2010 2:51:32 PM
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Having worked in the mass storage division of a computer company I can say: "It is all about the cost per MByte". We had higher performing drive systems we owned/developed, but in the end, the lowest cost off the shelf drives displaced the much higher performing but very expensive drives. Cost rules in most of the consumer applications (cellphones, TVs, games, etc.). If PCM can be cost effective it will be successful, if not, then it will be an interesting curiosity.

greenpattern
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re: Micron confirms support for phase-change memory
greenpattern   7/31/2010 11:17:28 AM
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The article rightly indicates current density, electromigration, and thermal crosstalk as important issues often ignored. The atoms are supposed to be heated to the point of displacement, right?

greenpattern
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re: Micron confirms support for phase-change memory
greenpattern   7/31/2010 11:08:12 AM
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Cell phones emit magnetic fields. I doubt MRAMs are appropriate in that environment.

selinz
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re: Micron confirms support for phase-change memory
selinz   7/31/2010 5:41:23 AM
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500gb notebook drive, that is...

selinz
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re: Micron confirms support for phase-change memory
selinz   7/31/2010 5:40:33 AM
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History is often a good indicator of the future performance, but not always--particularly when the history is 40 years old. No TV time needed for bubble memory as I was an intern with IBM on Cottle Road in the early 80's when they made the decision to shut down the bubble program. As far as PCM failing on cost basis, that is pretty much why anything fails. That's why bubble memory failed. A garnet wafer with the Liquid phase epitaxy film was just too expensive... (even though we had demonstrated 0.4 micron resolution using phaseshift masks) Hard drives have fought off nearly every technology in terms of cost for 30 years. A 500gb drive for $50 at fry's in todays paper suggests that it is still doing it. That's good history...

resistion
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re: Micron confirms support for phase-change memory
resistion   7/31/2010 3:01:24 AM
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The trouble is system-level fixes add system-level costs which are not benefited by scaling (they add area outside the array). Maybe MTJs don't need so much. Can PCM process cost be lower than NAND?

ece-professor
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re: Micron confirms support for phase-change memory
ece-professor   7/31/2010 1:45:39 AM
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MRAM has no way to compete with NAND flash in terms of storage density or GB/$, though it may find its role as embedded memory to replace eFlash or eDRAM. A recent very good PCM survey paper from IBM says "if PCM fails, it will be on a cost basis ...", with which I totally agree. Meanwhile, with the help from strong coding and signal processing and other system-level tricks, it should not be a big surprise if NAND flash will be scaled to ~10nm, and we could imagine how difficult it would be for PCM to compete with NAND flash on a cost basis. Lastly, as storage capacity increases, the touted endurance advantage of PCM will become very much irrelevant in most applications.

resistion
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re: Micron confirms support for phase-change memory
resistion   7/31/2010 1:17:56 AM
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Some companies working on MRAM. Would that be a better technology to use than PCM?

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