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Shine as Nand Flash put grain price to fall greatly, the price of SSD also goes low all the way subsequently, also can afford even introductory class user the SSD that already became Chinese cabbage price eventually. Say to choose SSD to carry Nand Flash to shine above all put grain, but very much Xiaobai sees so called former plant grain, black piece, feel the head is very dizzy when buildup, grain of so former plant, black piece, buildup is what meaning after all, big to the influence of product function?
Should understand former plant grain, black piece, buildup is about to know Nand Flash shines first how does production come out put grain. NAND Flash shines putting grain is a kind of blame breaks a gender easily to visit memory medium randomly, its are produced is process silicon data a norms to be 6 inches first, 8 inches, 12 inches of complete brilliant wafer that differ, be called to enclose the chip before Die, reason hundreds of Die can be made on each brilliant circle. Come down every Die cut with laser beam cutting machine next, hand-in-hand travel checks, the product that capacity, function, stability amounts to mark can be enclosed into Nand Flash to shine put grain. And those Die that appear to damage or did not pass the test such as capacity, function, stability when cut, former plant can define his the defective goods that it is incomplete to undertake discarding as useless handling.
Not be of course after saying all Die undertake enclosing, can yield fine is tasted. Still can produce defective goods of a few incomplete in enclosed process. The incomplete defective goods after detecting twice this is black an origin with buildup, spoken parts in an opera is the leftover material that produces Nand Flash to show the generation in putting grain.
In mechanical clavier domain former plant axis expresses some axis that specific manufacturer rolls out, also feel so called to former plant grain is some grain that specific manufacturer rolls out then, this cannot be mixed it is. What grain of so called former plant points to SSD domain is by qualification Die is undertaken enclosing, and enclose what after finishing, still detect through quality to shine put grain, expressing these grain is classy article, no matter be function, stability or price,be taller so.
Buildup is those come out in the examination after enclosing then imperfect Nand Flash shines put grain. Cannot sell as quality goods when apparent buildup, so brilliant round factory controls cost to answer, also can sell a few buildup that did not make bid downstream firm, and after letting downstream manufacturer make bid, sell again. So called black piece mention before us namely those detect before enclose give what the Die that has a problem makes to shine put grain. Because these are black piece it is incomplete defective goods, the price is very accordingly low.
Come from quality say, former plant grain is best of course, was to pass the qualification of strict test twice to taste after all. And black piece it is the soddenest, produce after all come out to have clear problem. Buy by the product that uses this kind of grain, good with see character completely. Buildup, character still is compared general black piece should better, but best circumstance also is function and life are close to former plant grain only just.
This not difficult explanation why very poor, life also did not grow the performance of SSD of brand of a few mountain fastness, because its are,used black piece. And buildup product quality is passable, but if the price is mixed of former plant grain about the same, that also was not bought. When buying SSD, for function and life, suggest everybody still introduces the product of former plant grain of first selection.
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