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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!munnari.oz.au!hp9000.csc.cuhk.hk!uxmail!ee_hflo
- From: ee_hflo@uxmail.ust.hk (Michael Lo Ho Fung)
- Subject: Re: Simple CPU Questions
- Message-ID: <1993Jan5.121048.9355@uxmail.ust.hk>
- Sender: usenet@uxmail.ust.hk (usenet account)
- Organization: Hong Kong University of Science and Technology
- X-Newsreader: TIN [version 1.1 PL8]
- References: <72263@cup.portal.com>
- Distribution: usa
- Date: Tue, 5 Jan 1993 12:10:48 GMT
- Lines: 38
-
- MYRON A LIEBERMAN (drchip@cup.portal.com) wrote:
- : >Kevin Brewer (kevinb@unssun.nevada.edu) wrote:
- : >: I'll admit it. I use a Mac. But I have a simple(?) question about the
- : >: intel x86 CPU's. (If this is a FAQ, please direct me to the proper
- : >: place as I don't read this news group.) So here goes...
- : >:
- : >: My brother-in-law just bought a 486SX machine. What is the difference
- : >: between the 486SX and the _normal_ 486 chip? FPU? 16 v. 32 bits? ???
- : >: Is there a _normal_ (full powered?) 486 chip? The 486DX?
- : >:
- : >: Thanks - Kevin
- : >:
- : >:
- : >:
- : >Kevin, read the thread on the question above this one regarding
- : >386SX bus widths.
- : >
- : That won't answer his question. The 486SX is a 486 without a built-in
- : coprocessor but otherwise the same as the 486 (original) or 486DX. The
- : 386SX has reduced address bus (24 bit) and data bus (16 bit). There is
- : no coprocessor issue with the 386 since no 386 has a built-in coprocessor.
-
- 486-DX,486-SX,487-SX is the same die but they use difference bonding
- and package.
-
- The released of 486-SX is used to offer a high performance CPU and
- same price of AMD 386-40. The Co-process in the die is disabled by intel.
- Because those die a selected from 486 production line that the co-processor
- part was failed during production.
-
- One of my friend try to insert a 487-sx into the 486-dx socket.
- As the result, the computer can boot up and run all of programs.
-
- 487-sx have one pin more than 486-dx.
-
- Michael Lo
-
-
-