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Originally Posted by moz
That doesn't affect most of us - static memory and cards in our lissooses have the same problem, and they all have controllers that rotate the writes to mitigate it.
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Yep. I mentioned gradual degradation.
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At the risk of introducing maths to the debate  let's try doing the numbers. If you could get 3Gb/s (SATA II) out of it, your 64GB disk has 64x8 = 512Gbits in it, so takes about 170 seconds (3 minutes) to write to the whole thing. Then 3 minutes to read back. Times 100,000. 600,000 minutes is 10,000 hours or about 1 1/2 years. But in real life even the fast disks can only write at about 200Mb/s (50MB/s), 15 times slower. So that theoretical 1.5 years is actually 22.5 years with a real disk. And that's only if you continuously write to the drive, rather than actually using it for something.
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Agreed that it isn't likely to be a problem. I was thinking of things like OLTP with heavy database access as potential trouble spots. For what most mortals do, it will never be an issue, because you'll replace the device long before you even start to see a problem.
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Dennis