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- Path: sparky!uunet!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!cs.yale.edu!ewing-martin
- From: ewing-martin@CS.YALE.EDU (Martin Ewing)
- Subject: Re: Re : Single Transistor Clock - ALPHA
- Message-ID: <1992Sep8.201415.8422@cs.yale.edu>
- Sender: news@cs.yale.edu (Usenet News)
- Nntp-Posting-Host: minerva.cis.yale.edu
- Reply-To: ewing-martin@yale.edu
- Organization: Yale Univ. Science & Engineering Comp. Facility
- References: <1992Sep8.091816.22659@rkna50.riken.go.jp>
- Date: Tue, 8 Sep 1992 20:14:15 GMT
- Lines: 21
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-
- In article <1992Sep8.091816.22659@rkna50.riken.go.jp>, wong@rkna50.riken.go.jp (Wong Weng Fai) writes:
- ...
- |>
- |> 1. I guess whether its a single transistor or not depends on how you
- |> count. But is this huge "thang" responsible for the infamous "oven-toaster"
- |> effect of the 21064 ? Will pumping the clock speed higher melt the chip ;-) ?
- |>
-
- In CMOS and other high-impedance technologies, the transistors are driving
- mainly capacitive loads. Each change of state requires Q=1/2 CV**2
- increment of energy, and the current and power drain scale pretty much
- linearly with clock rate. (Conversely the drain goes nearly to zero at
- low clock rate.)
-
- The melting point of Si is pretty high, but the thought of a CPU glowing
- cherry-red appeals to me. (The days of 304 TLs and other big glass RF power
- tubes are gone forever. :-)
-
- Martin Ewing
- AA6E
-