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To: Joe NYC who wrote (3239)	1/29/2008 4:27:13 PM
From: Pam	Respond to of 4590

Unless > 2 b/c can be produced at latest node, the answer is that it may not be worth it... Toshiba/Sandisk are producing 3 b/c for the first time and that probably is the reason they are doing it at a mature node (easier to produce). If all goes well, I would expect future generations of 3 b/c at leading-edge nodes. Sandisk has already indicated that from a cost per bit perspective 3 b/c at 56nm will be more expensive than 2 b/c at 43nm which they start in 2Q08, but then they have to start somewhere and move up the learning curve. The same question as above. Is 3 b/c at 56nm worth it, if it is going to perform substantially worse than 2 b/c at 43nm? Well, it depends. If 3 b/c performance is acceptable for certain applications and if it can be manufactured at the leading-edge nodes for the future generations, it will certainly be worth it. From the paper Buggi sighted, 56nm 3 b/c's Write performance was at 8 MB/s fairly good I would say for most applications, except for high speed cards where they use SLC and in some cases 2 b/c MLC anyway.