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To: Tony Viola who wrote (91917)11/9/1999 4:27:00 AM
From: John Walliker  Respond to of 186894
 
Tony,

However we both agree that Coppermine should be capable of 1GHz + speed next year.

Very informative post. Miller capacitance. Got to get that Miller C down.


Very interesting. (For the benefit of those who aren't into such things, what this means in English is that there is some capacitive coupling between the output and input of each transistor. Because the output voltage falls when the input rises, this coupling tends to counteract the rise of the input and makes it look as if the transistor had a higher input capacitance than it really has. Hence it becomes slower, because more charge has to be put into its input in order to make it switch. Reducing the "Miller capacitance" therefore makes each transistor faster and hence speeds up the whole processor.)

John