Their 65nm chips needed 2 respins before they were able to ship anything.
Do you have a source for that? Not saying its not true, I just never heard it. For the record, a respin means redoing one or more of the masks in the maskset.
what I read was that they had issues mostly with the chip packaging, but you can change packaging without redoing the mask, you can even do it with wafers that are already produced (but not yet packaged).
Bogart speaks the truth.
From Josh words I count 2 respin, but I suspect 3.
Josh like to exaggerate things and spread news all over the place 24/7.
At one point he was quiet.
The engines didn't work as planned.
Long time no news in this period
They hoped the engines will work at 500 mh/s at a certain power envelop.
It turned out that the engines will max at 250 mh/s with a greater power usage than the final product.
So I suspect another respin here.
Originally they hoped to design a chip with 16 engines running at 500 mh/s each. 16*500mh/s=8Gh/s.
8 chips per single 8*8=64 Gh/s. at less than 1 watt per Gh/s was the plan.
We all know now that they need double the ammount of chips at a greater power envelop.
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