This is all new with me, but what number of chips has to do with ASIC's speed? Using logic bigger is better, shouldn't be 16nm chips be faster then 7nm? Or is not? Can you please elaborate?
These numerical values refer to the manufacturing "size" of the wafers used in the chips. Not the quantity.

Generally smaller is better, as they are more efficient, use less electricity, generate less heat, and so on.
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