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- Newsgroups: comp.arch
- Path: sparky!uunet!sun-barr!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!jvnc.net!nuscc!ntuix!eoahmad
- From: eoahmad@ntuix.ntu.ac.sg (Othman Ahmad)
- Subject: Re: 64-bit CPU vs 2 x 32-bit CPUs
- Message-ID: <1992Jul26.043911.19430@ntuix.ntu.ac.sg>
- Organization: Nanyang Technological University - Singapore
- References: <1992Jul26.032636.244142@cs.cmu.edu>
- Date: Sun, 26 Jul 1992 04:39:11 GMT
- Lines: 24
-
- In article <1992Jul26.032636.244142@cs.cmu.edu> lindsay+@cs.cmu.edu (Donald Lindsay) writes:
-
- :
- : eoahmad@ntuix.ntu.ac.sg (Othman Ahmad) writes:
- : >Which die area are you measuring? Have you taken into account the area taken
- : >by the pads? The pads are huge and require large drivers and protection
- : >circuits.
- :
- : Since the DEC 21064 Alpha chip only supports 43-bit effective virtual
- : addresses, the cost is approximately 43-32=11 pins.
- How about the 64 pin program and 64 pin data?
-
- :
- : Since the package has 431 pins, I don't think that 11 pins was some
- : sort of horrendous burden that changed everything.
- If it needs only 11 pins, why do you need 431 pins? Why not just 132+11?
- 80386 uses 132 pins.
-
- --
- Othman bin Ahmad, School of EEE,
- Nanyang Technological University, Singapore 2263.
- Internet Email: eoahmad@ntuix.ntu.ac.sg
- Bitnet Email: eoahmad@ntuvax.bitnet
-
-