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From: ins845b@monu4.cc.monash.edu.au (mr  k.l. lentin)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: 386, 386SX, 386DX
Message-ID: <1991May24.011617.5241@monu0.cc.monash.edu.au>
Date: 24 May 91 01:16:17 GMT
Article-I.D.: monu0.1991May24.011617.5241
References: <9105231357.aa11727@Bonnie.ics.uci.edu>
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In article <9105231357.aa11727@Bonnie.ics.uci.edu> rcitek@Bonnie.ICS.UCI.EDU writes:
>What is the difference among the 386 chips?
>Is there a 386 chip or only a 386SX and 386DX?
>Thanks for any and all help.
>Robert

These are all definitely different chips!
The 386sx is a 16 bit chip with a 32 bit architecture. (same thing happened
somewhere along the 8088, 8086, 80186,80286 path!) This means that the bus
is a 16 bit bus but the processor is a 32 bit architecture so it has to do
everything twice. Thats why you can add 386sx upgrades to 286 machines so
easily.

The dx Is a laptop version I think (something to do with power) I may be wrong

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