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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: jspeed who wrote (237237)7/26/2007 1:14:27 PM
From: wbmwRead Replies (5) | Respond to of 275872
 
Jspeed - AMD Barcelona Yields

Nice catch. They claim <0.50 defect/cm2. Let's just call it 0.45 to be generous.

Use this calculator, which has been the standard for us:

icknowledge.com

Barcelona is 283mm^2, so 16.823 on a side. Use 300mm wafers, and 0.45 defect/cm2:

AMD's yields are 32%. Aweful, and yet this is above their usual past yields, according to slide 159. Elmer has been right all along.

Thanks, AMD, for this valuable piece of data.



To: jspeed who wrote (237237)7/26/2007 7:52:36 PM
From: misenRespond to of 275872
 
The D0 is in defects per cm2. So to convert to per in2, you need to multiply by (2.54cm/in)^2 which gives you a D0 of 3.23/in2

Misen


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