🚀 go-pugleaf

In article <76814@ut-emx.uucp> ifaq570@ccwf.cc.utexas.edu (Allen Kitchen) writes:
>
>	Sorry bud, but to upgrade from the  486SX to the 486DX, you will
>need to buy an entire new motherboard.  Reason for this is that the SX is
>a 16 bit memory bus, just like the 386.  The DX is a 32 bit part, meaning
>the memory is set up to be 32 bits wide.  Since the memory width is not
>changable, you will need a new motherboard.  Save your memory though.  You
>can never have too much memory, or disk space.  
>	A good analogy would be 'how do I upgrade my 4 cylinder engine to 8 
>cylinders ?'.

I usually don't reply to messages of this nature, but SHEESH!  You're
giving sutdents at the university of texas a bad image.   No, it is possible
to upgrade your processor to a 486DX if your motherboard supports it.
Most of the less-expensive 486WB OPTi motherboards have jumper settings
to allow you to use anywhere from a 486SX-20 to a 486DX-50 on the same
board.  Please check with your dealer for more information on your
particular motherboard.   The 486SX is NOT 16 bits... it's a true 32
bit chip, with the 8k on chip cache, as well as all the other features
of the 486DX, only it runs at a slower clock and has the math coprocessor
missing or disabled (depending on what intel now does).

You might check to see if there are extra jumpers around the socket for
the 486.  If your motherboard only has a slot for a weitek math coprocessor,
there's a good chance that it will support the processor upgrade since
there's no slot for a 487.   Motherboards that have this feature are usually
near the bottom of the scale with prices for a 33MHz 486DX board running
around $569 now.  The cache on these boards usually starts at 64k and is
upgradable to 256k only.  The manual for these motherboards is skimpy
and has a red glossy cover.  You should look for these features if your
dealer is uncooperative.

-Nathan I. Laredo
-Georgia Institute of Technology, Atlanta, Georgia
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