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Internet Message Format  |  1992-08-17  |  947 b 

  1. Path: sparky!uunet!cs.utexas.edu!swrinde!mips!sdd.hp.com!usc!rpi!batcomputer!lynx.msc.cornell.edu!boris
  2. From: boris@lynx.msc.cornell.edu.UUCP (Boris Yost,311 Bard Hall,4045,2739205)
  3. Newsgroups: comp.sys.ibm.pc.hardware
  4. Subject: Re: What is the difference between DX and SX?
  5. Message-ID: <1992Aug17.134521.27998@msc.cornell.edu>
  6. Date: 17 Aug 92 13:45:21 GMT
  7. References: <1992Aug15.185130.24702@wyvern.twuug.com>
  8. Sender: news@msc.cornell.edu
  9. Organization: Cornell-Materials-Science-Center
  10. Lines: 7
  11. Originator: boris@snoopy.msc.cornell.edu
  12.  
  13. >>What is the difference between a DX and a SX specification for 386 and
  14. >>486?!  Usually, SX means 16 bit bus structure and DX means 32 bits bus
  15. > The 486 has some additional instructions, and the 486DX has
  16. > an onboard math co-processor, if that helps.
  17. The SX processors have only 16bits worth of data lines on the package, so 
  18. they have to do two reads to get a long.  But this makes the system cheaper.
  19.