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- Newsgroups: comp.arch
- Path: sparky!uunet!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: <1992Jul25.151537.19358@ntuix.ntu.ac.sg>
- Organization: Nanyang Technological University - Singapore
- References: <1387@sousa.ltn.dec.com>
- Date: Sat, 25 Jul 1992 15:15:37 GMT
- Lines: 22
-
- In article <1387@sousa.ltn.dec.com> supnik@human.enet.dec.com (Bob Supnik) writes:
-
- :
- : In article <GLEW.92Jul23181843@pdx007.intel.com> glew@pdx007.intel.com (Andy Glew) writes:
- : >
- : > Maybe true. But for a user, should he buy one $2000 21064 chip or another
- : > two $1000 CY7C601!?
- : As I pointed out originally, from measuring both the R4000 and the Alpha chip
- : die, the 64-bit (vs 32-bit) integer/addressing data paths adds 10% (or less)
- : to die area. This will NOT drive a 2X difference in costs; more like 1.2X.
- 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.
- The packaging also increases. You need 471 pins for Alpha. 64-bit
- alpha requires similar number(can't remember).
-
- --
- Othman bin Ahmad, School of EEE,
- Nanyang Technological University, Singapore 2263.
- Internet Email: eoahmad@ntuix.ntu.ac.sg
- Bitnet Email: eoahmad@ntuvax.bitnet
-
-