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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 249.66+7.6%Jan 21 3:59 PM EST
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To: Bill Jackson who wrote (21769)12/6/2000 11:53:11 PM
From: fyodor_Read Replies (1) of 275872
 
Bill: I am not sure we read the same places. I have one price of $75,000 per kilo of pure Si28 that backs out to about $40 per CPU if 200 survive from a solid Si28 wafer and is 37 cents for an epi wafer.

Ahh ok, I see what you're saying now.

I have no idea how many wafers can be made form a kg of Si, so I just used the "per chip" numbers cited by Isonics. They may be overly optimistic.

If the price comes to something like 40 bucks a chip, I doubt it would make sense, economically, since 40 bucks extra in materials would probably add something like 80 bucks to the consumer price. Unless the benefits of isotopical purity are VERY significant, I don't think anything above a $10 increase per chip is acceptable. Of course, if most of the performance increase could be leveraged by using epitaxially grown Si-28 wafers at a fraction of the price, then that might be the way to go.

-fyo
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