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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 203.14-0.8%Jan 9 9:30 AM EST
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To: dale_laroy who wrote (34948)4/5/2001 10:36:05 AM
From: fyodor_Read Replies (1) of 275872
 
Dale,

What are your thoughts on AMD/Moto's decision to go with 2 additional metal layers in their .13mu SOI process (9 ML, as opposed to the current 7 ML)?

I would assume that, all else being equal (which it isn't), additional metal layers would decrease yields, since they require more process steps.

I would also assume that additional metal layers would decrease the die size of _some_ designs. Is a modern CPU limited in this direction?

I can imagine that more metal layers could be necessary at higher clock frequencies (somewhat similar to how more pins and/or traces are needed to send higher clock-frequency signals on a PCB). Is this the real reason for the increased number of metal layers?

Thanks,

fyo
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