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Samsung Confirms 32nm Flash Problems, Working on New SSD Controller Samsung Confirms 32nm Flash Problems, Working on New SSD Controller
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Samsung Confirms 32nm Flash Problems, Working on New SSD Controller
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Old 5th October 2009, 10:36   #1
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Default Samsung Confirms 32nm Flash Problems, Working on New SSD Controller

DailyTech reported several days ago that SSD manufacturers have been having problems with Samsung's latest generation of 32nm NAND flash. The new chips have slow write speeds, thus making them unsuitable for use in SSDs since that is one of the major advantages that the new drives have over conventional hard drives.

We have received a reply from Samsung confirming the issue, stating that "for quality SSDs, every NAND process geometry upgrade requires a matching upgraded controller. Should (Samsung's) 30nm-class NAND be used with a conventional controller of insufficient quality, performance slowdowns are indeed possible".

Flash memory stores information in arrays of memory cells made from floating-gate transistors. As these transistors scale to smaller process geometries, it becomes harder for electrons to flow. This sometimes causes errors in writing to memory cells which must be corrected through ECC (Error Correcting Code). ECC is typically handled on the flash controller, which may be overloaded by excessive write errors if it is not sufficiently powerful enough. This is the most likely scenario for what is happening.

http://www.dailytech.com/Samsung+Con...ticle16407.htm
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