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To: Paul Engel who wrote (151490)12/6/2001 9:54:54 PM
From: Elmer  Read Replies (1) | Respond to of 186894
 
Most people don't do the simple math - and realize that AMD's die yields STINK at 27% - whereas Intel's yields are 2X to 3X of that !

You may be right about this Paul but I'm trying to give AMD the benefit of the doubt. It's not easy but if we assume AMD is only devoting half their fab capacity to processors (why in the world would they do that?) then your 2x or 3x numbers don't work. However even under these highly improbable conditions the yields are still a disaster. There is no doubt their fabs are in deep trouble, at least to people who have knowledge of semiconductor manufacturing, but Intel's 2x or 3x yield may possibly be too optimistic, but then again they could be spot on.

EP



To: Paul Engel who wrote (151490)12/6/2001 10:21:10 PM
From: Dan3  Read Replies (2) | Respond to of 186894
 
Re: Most people don't do the simple math [on yields]

Over the past 3 years, Intel has spent about $20 Billion on chipmaking facilities, while AMD has spent about $2.5 Billion. Let's say a third of Intel's costs are for flash, etc. while all of AMD's costs are for CPUs.

So Intel spent (at least) $14 Billion on CPU plant, while AMD spent $2.5 Billion. Intel spent 5+ times as much, yet their plants only produce 3 times as many chips.

The average (median) size of Intel CPUs has been smaller than AMD CPUs, since many are .18 PIII/Celeron at 90mm2 or .13 mobile PIII/Celeron and Celeron at 79mm2. As Intel ramps 217mm2 P4s (and even Northwood won't be tiny) that will change.

Meanwhile, AMD's chips are Athlons at 129mm2 and Durons at 100mm2.

AMD's yields are fine, and there is no way Intel should be finding itself low on anything after spending all that money on their FABs.

And AMD longs aren't stuck withe vague "our yields are the bestest in the universe!" banalities from the company, they way you are. AMD has publicly and on the record stated they are getting 90% yields (200 die off an 8 inch wafer).

If either company is having yield problems, it's Intel.