Leading Edge 486 computer rescued & revived

This Leading Edge computer from 1993 was originally a 486SX-33, and was later upgraded to an AMD 5x86-133. Recently it wouldn't boot up anymore, so the owner was just going to throw it out, but I rescued it and found that the problem was bad RAM. It is now working fine. It features a rare and unusual "OPTI Local Bus" slot -- not EISA as I initially said in the video. This would make a great Windows 3.11 machine, but not so good for Windows 95 or higher because its RAM is limited to a maximum of 32 MB.

Category:

Science & Technology

Tags:

• 1993
• leading
• edge
• 24xy
• tower
• computer
• pc
• clone
• compatible
• 486
• 486sx
• 486dx
• 486dx2
• amd
• 5x86
• 133
• mhz
• evergreen
• upgrade
• isa
• eisa
• opti
• local
• bus
• slot
• motherboard
• bad
• ram
• simms
• daewoo
• goldstar

[bakonfreek]

just out of curiosity, how much space does the 5 1/4 disks store? I have a bunch of old ones and was wondering if I could use them for fun or just sell them...

[vwestlife]

@bakonfreek Double-density (a.k.a. "low density") 5¼-inch disks store 360 KB, and high density 5¼-inch disks store 1.2 MB.

[Halterung01]

Do you know, if GoldStar has something to do with Lucky Goldstar (LG)

[vwestlife]

@Halterung01 Yes, Goldstar became LG after merging with a company called "Lucky" in 1995.

[m9078jk3]

I would be sure to set the voltage right on that AM5x86 CPU (Vcore 3.45 Volts) as a double check in case you haven't done this yet.Some Intel 486 CPU's use 5 volts,3.3 or 2.5-2.9 (rare).Setting it at 3.3 Volts is within parameters.If the voltage is not set right the CPU will fail in about a year.

Also put a small CPU fan over that CPU heatsink.I've seen a PC with that exact CPU act erratic and unusable on an IBM machine (The CPU was too far gone and even with a fan it still acted unstable).

[vwestlife]

@m9078jk3 The 5x86 upgrade module has its own onboard voltage regulator to convert the motherboard's 5 volts down to 3.3 volts for the CPU. And it uses the low-power laptop version of the 5x86, so it doesn't need a fan.

[bacovia2004]

@vwestlife My retro rig is a AMD K5-PR100 with Win95.

[sr71ablackbird]

I got a Leading Edge PC in the basement.

[sr71ablackbird]

@vwestlife speaking of those 5 1/4s did you ever have to do the disk swapping with the dual drive ones ? I have one that still does that. Still looking for one of those Commodore PETs with the cassette tapes that i used to use in middle school. Guess I'll quit now, seeing that i'm telling my age from the Commodore PET comment...lol...

[BassPounderX]

i wish u could do all that today with the upgradeing cpu cache and shit but no

[terracon]

Pretty sure it has been made known, but the 487SX was an overpriced math-coprocessor upgrade for 486SX systems. As for the RAM, I recall hurting my fingers getting those ****'n SIMM's installed on those motherboards. Ahh, nostalgia.

[terracon]

Heh, I think I've seen a few of these Leading Edge PC's before.