Need help with PSU for 486 (new one ATX) \ VOGONS

Need help with PSU for 486 (new one ATX)

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First post, by Jackhead

Posted on 2024-02-20, 16:54

Jackhead Offline

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Im a little bit worried about some readings using a new PSU for older hardware.
I read i shoud go min 25A on 5V rail.
ATm i using a Bequite! System Power 9 on my 486 what has 24A on 3.3V and 15A on 5V rail combined 103W.
I run this PSU over a year now without problems. And my 486 is filled up with hardware (ISA/VLB). So i wonder what is on that point going 5v with 25A+?
Or is that combined 3.3V/5V with 103W ok? Anyone really have damaged parts from to low Ampere on 5V ?

Dos 6.22: Asus VL/I-486SV2GX4 Rev 2.0 1Mb L2 - A5x86 X5 P75 - 64MB - AHA-2842A VLB - ET4000W32P VLB - CT2230 - GUS ACE - MPU-401AT with YucatanFX
Win98SE: Asus P5K-WS - E8600 @ 4,5GHz - Strange God Voodoo 5 6000 PCI-X - 2GB DDR2 1066 - Audigy 2 ZS

Reply 1 of 2, by rasz_pl

Posted on 2024-02-20, 17:45

rasz_pl Offline

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Joined: 2017-06-04, 00:57

no you wont damage anything with less capacity psu, worst case it will be shutting down on peak load

https://github.com/raszpl/FIC-486-GAC-2-Cache-Module for AT&T Globalyst
https://github.com/raszpl/386RC-16 memory board
https://github.com/raszpl/440BX Reference Design adapted to Kicad
https://github.com/raszpl/Zenith_ZBIOS MFM-300 Monitor

Reply 2 of 2, by danieljm

Posted on 2024-02-20, 17:48

danieljm Offline

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25A on 5V is usually the minimum recommended specifically for an Athlon system. If your 486 is running stable, you don't have anything to worry about.

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