Amiga 4000 desktop power supply unit (PSU) fan

[solarbird]

In case anyone ever needs to know - and this is written a bit repetitively for searchability later, if someone finds it via web searches later you're welcome:

The stock Amiga A4000 desktop power supply (PSU) 12V (12 volt) fan runs at 3000 RPM ( 3000RPM ) by my measurement, moving 20-30 CFM (cubic feet per minute) of air according to what little data I can find online.

(Obviously, that's an outside-of-PSU measurement, as case affects airflow.)

It is a standard 80mm fan by measurement and can be replaced with a Noctua NF-A8 FLX 3-pin fan running on the low-noise but not lowest-noise cable, which gets you just under 25 CFM - at least in the current (2021) iteration of that fan's lineup.

This does not make the PSU run silent but does make it run a lot more quietly.

Comments

[dewline]

Now I'm having nostalgia attacks about DeluxePaint III, Framegrabber, Caligari and stuff I'd use on A2000 machines in the Algonquin College Animation lab in the early 1990's...

[solarbird]

I'm downright allergic to nostalgia - but I do keep the machines I own actually working. ^_^

[dewline]

I do NOT miss the years before TrueType fonts were a real standard, that I tell you!

[solarbird]

oh CHRIST this

I know I managed to get a couple of Adobe Type 1 fonts dragged over to whatever the hell that German font format was that the Amigas used but... it was neither easy nor fun.

(And don't even let me get started on bitmap fonts, even though I made more than a couple. nnnngh)

[dewline]

Ugh. Bitmap fonts were almost all we had in the Amiga lab, unless they were physically installed as cards in the printer. But we weren't expected to want to use the more decorative fonts in our work for our graded classes.