Replies to post #85212 on Advanced Micro Devices Inc (AMD)

[chipguy]

I have to wonder if the 85% simply means the number of fully
formed die sites more than a few mm from the wafer edge,
i.e. potential working die sites, divided by the total number of
full and partial die sites stepped over the wafer. That would
be pretty sneaky but OTOH AMD is the company that tried to
wow analysts by claiming 90% yields when they were actually
talking about line yields.

[wbmw]

Re: Caudell said each 300-millimeter wafer holds about 350 microprocessor chips, with about 85 percent being usable.

>> I commented on this over on SI. It's simply not realistic.

Perhaps they meant 85 chips per 350 are usable, not 85 per cent.