Yeah. I don't know why they chose not to do testing. I guess they figured they'd get the chips a day or two earlier without it.  Remember, there are four physically separated circuits on each die.  They're completely separate, the only difference between them an totally independent chips is the die isn't cut. I guess the theory is that it makes it cheaper to package/mount that way.

Anyway, it could be that KnC thinks its extremely unlikely that all four sub-chips will be bad, and therefore their plan is to mine with functional circuits on chips that have problems.

Seems like a reasonable plan to me.

I don't get why people are so obsessed with this - they are going to test the units before they send them to customers, and that's all that matters, right?