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Politics : Formerly About Advanced Micro Devices
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To: THE WATSONYOUTH who wrote (68370)8/11/1999 1:16:00 AM
From: Process Boy   of 1581947
 
THE WATSONYOUTH - <Alternately, perhaps Athlon is also around 35A in .25um technology.Then they are leaving performance on the table if they are power limited to 1.7V. Now, Intel's .18um process supposedly will run 20A gate oxide. This should limit the voltage to 1.5V (reliability limit) unless Intel comes up with an improved gate oxide process. Given so much lower operating voltage, Intel's device design at 1.5V must improve dramatically (much shorter channel lengths). From what I've seen, it has. So at 1.5V Coppermine power should decrease quite a bit even at much higher (825MHz) frequencies. If AMD also goes to 20A, then they should also be limited to approx 1.5V. But this is only .2V below where they are now. So, at higher frequencies (say above 900MHZ) power may not decrease at all. They may have to run even lower voltages at .18um to lower the power. This will put much pressure on the device design and process which will have to push to shorter channel lengths to recover the performance. Please be aware there are a lot of assumptions here. But, this should illustrate some of the tradeoffs. I do think there is a downside in using 22 million devices. Hopefully for AMD, they can get around it..
THE WATSONYOUTH>

Nice post.

PB



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