On Tue, 2010-02-02 at 07:41 -0500, Bob Camp wrote:

> Next up is price. I'm seeing a 3 to 5X premium for the SLC's. That's a big 
> jump,
 This is why MLC is so widespread.  There is a big difference in cost to
 manufacture.  The actual cost is 2 to 4 times more for SLC.


> The question becomes - will a 2X larger name brand MLC outlast a SLC *if* you
>  never write to the second half of the disk? 
 You could probably come up with some scenario where a bigger MLC would last
longer.  Just remember that MLC cells can be written an order of magnitude less
often than SLC.  That is no exaggeration.  It is in the specs.  MLC is probably
good enough for use in a camera, although I avoid it.  For a computer,
it is almost always a bad idea.  Smart wear leveling is what makes MLC
usable at all, but that order of magnitude difference in durability will
get you in the end.
 
Good luck,
Ralph


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