IBM PS/1 Processor Upgrade \ VOGONS

IBM PS/1 Processor Upgrade

Topic actions

First post, by CunardPier54

Posted on 2023-07-08, 16:28

CunardPier54 Offline

Rank Newbie

Rank: Newbie
Posts: 1
Joined: 2023-07-08, 15:23

I was able to upgrade my 1993 IBM PS/1 (2155 Professional) from the stock 33 MHz 486 DX to a 66MHz DX2. Would I be able to replace that with a Am5x86-P75 AMD (AM486DX5-133W16BHC) which to my understanding is a 486, without a hassle?

Reply 1 of 1, by Sphere478

Posted on 2023-07-08, 23:57

Sphere478 Offline

Rank l33t++

Rank: l33t++
Posts: 6000
Joined: 2021-01-13, 04:45

A pentium overdrive 83mhz is probably the easiest option.

Some of the faster cpus need 3.3v so a interposer would be required. I have a project for this, and so does calamity lime. They also used to sell them, might be able to find a old one online.

But here is the catch, a pentium overdrive 83 is kinda as fast as those other options in many respects even with the slower clock.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Go to top of page Go to top of page

Back to General Old Hardware