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popcorn
Cyrix 386 to 486 clock-doubled upgrade microprocessor Mark Unseen   May 14 04:34 UTC 1996

Donated by Rob Argy (ajax):

  I have a "Cyrix 386 to 486 Clock-Doubled Upgrade Microprocessor" to
auction.  You need to currently have a 386DX-33; you take it out, and
in its place goes this Cx486Drx-33/66.  According to the box, it says
Norton's SysInfo performance benchmark will go from a 28 to an 86.
 
  It comes from my quasi-stepfather Ted, who has a Dell 386.  The folks
at Dell told him this was how to upgrade.  Unfortunately, the Intel 386
on his motherboard is a tiny surface-mount chip, meaning it's soldered
on to the motherboard.  So if you're interested, make sure that your
386 chip is in a socket, such that it can be pulled out (open the case,
and look for a chip on the biggest board that says "Intel i386DX-33" on
it).  You could also use this if you have a microprocessorless
motherboard, but that's somewhat uncommon.
58 responses total.
tsty
response 1 of 58: Mark Unseen   May 16 09:41 UTC 1996

dx only? what about an sx?
ajax
response 2 of 58: Mark Unseen   May 16 18:44 UTC 1996

DX only, I think SX uses a smaller chip.
dashadow
response 3 of 58: Mark Unseen   May 17 23:47 UTC 1996

Heck, I've got a 386-16DX but, it might work.  I'll start at $5.00
Somebody has to start the process.

matth3w
response 4 of 58: Mark Unseen   May 19 04:26 UTC 1996

I'l just buy a 386 if my bid wins - I offer $10
gregc
response 5 of 58: Mark Unseen   May 19 15:59 UTC 1996

$20.00
robh
response 6 of 58: Mark Unseen   May 20 16:35 UTC 1996

Current bid is $20 from gregc, made yesterday.
dashadow
response 7 of 58: Mark Unseen   May 20 23:51 UTC 1996

OK, $25.00
gregc
response 8 of 58: Mark Unseen   May 21 04:25 UTC 1996

$26
bilt
response 9 of 58: Mark Unseen   May 22 13:20 UTC 1996

Will it work as a doubler for a 486/33 makeing it a 486/66?
ajax
response 10 of 58: Mark Unseen   May 22 17:42 UTC 1996

  I kind of doubt it, as I think they would have advertised that feature.
The pin configuration is probably different between 386s and 486s, which
is why they'd say this is a 486 upgrade for 386s, instead of just a 486.
gregc
response 11 of 58: Mark Unseen   May 22 21:15 UTC 1996

This device is specifically for 386's.  A 486 is a bigger chip than
a 386. You couldn't plug one into the other's socket,
the pin configurations are completely different.
robh
response 12 of 58: Mark Unseen   May 24 13:40 UTC 1996

Current bid is $26 from gregc, made three days ago.
matth3w
response 13 of 58: Mark Unseen   May 25 22:59 UTC 1996

would it fit in a 386 laptop???
arthurp
response 14 of 58: Mark Unseen   May 25 23:56 UTC 1996

Probably not.
ajax
response 15 of 58: Mark Unseen   May 26 02:39 UTC 1996

I'd agree, probably not.  But if it's a 386DX, and you want to make sure,
you could open up the laptop and look for the microprocessor.  If it's
soldered right to a board, then no, but if it's in a socket, then maybe.
gregc
response 16 of 58: Mark Unseen   May 26 13:57 UTC 1996

Actually, if it's a 386DX and it's in a socket, then the answer is
"definately yes". These chips were made to duplicate a 386 in size, shape,
and pin layout. One exception: These chips have the pins coming out the
bottom of the chip and are designed to go into a normal socket. If the
laptop uses a PLCC style socketed 386, this chip won't fit. PLCC is the
style that has the contacts along the edge of the chip and the chip fits
down inside of a square socket. These are more compact and tend to be
used more on laptops.
ajax
response 17 of 58: Mark Unseen   May 26 17:23 UTC 1996

There are a couple other exceptions: speed of the chip/motherboard, and
the form factor of the chip other than its pinout.  This one includes a
heat sink, which probably means it's a good idea to use it, but most
laptops are pretty tightly packed and wouldn't have room for it.  The
chip with heat sink are probably half an inch high.
robh
response 18 of 58: Mark Unseen   May 26 20:02 UTC 1996

The current bid is still $26 from gregc, made six days ago.
Last chance to bid, everyone!
dashadow
response 19 of 58: Mark Unseen   May 27 04:17 UTC 1996

OK, $27
gregc
response 20 of 58: Mark Unseen   May 27 18:20 UTC 1996

$30
dashadow
response 21 of 58: Mark Unseen   May 27 23:07 UTC 1996

$31
arthurp
response 22 of 58: Mark Unseen   May 28 03:17 UTC 1996

Not to mention that laptop chips are often made to dissipate less power since
cooling can be an issue in laptops.  
robh
response 23 of 58: Mark Unseen   May 30 19:08 UTC 1996

Current bid is $31 from dashadow, made three days ago.
gregc
response 24 of 58: Mark Unseen   May 31 03:56 UTC 1996

$32.00
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