Mac OS 9 Lives! (Classic Mac OS Forum)

Classic Mac Hardware (Troubleshooting, Upgrading, & Modifying) => General Hardware Discussions => Topic started by: Overmann on October 20, 2021, 04:44:40 AM

Title: PowerMac 6400 PSU fan replacement
Post by: Overmann on October 20, 2021, 04:44:40 AM
Hi,
I've just gotten my hands on a pretty nice 6400, but it is extremely noisy. After disassembling the machine I find that it has only one fan; the PSU fan. On my machine this fan is a:

Nider
Beta SL
Model: D09T-12PG

From what I understand the fan has these specifications:

Fan Size: 92mm x 92mm x 25 mm
Voltage: 12V / 12V
Current: 0.4A / 0.29A
Power: 4.8W / 3.48W
Speed: 3500 / 3100 RPM
Air Flow: 58 / 48CFM
Noise: 35 / 34 dBA

When I usually replace PSU fans I go for some Noctua that fits. I've not really been paying attention to these specs very much, but I noticed that this fan has it's amp limit written on the front of the fan itself: 0.29 Amp. And it appears that it's low amp rating is 0.4 Amps. Some of the Noctua fans that I use have an Amp rating of 0.1A so I think it's about time I start paying attention to these specs. I should probably get a replacement fan that has about the same RPM and airflow rating as well.
Does anyone here have any thoughts or observations, or suggestions as to which fan I might go for?
Title: Re: PowerMac 6400 PSU fan replacement
Post by: chrisNova777 on October 22, 2021, 09:07:30 AM
my first mac....  8)
Title: Re: PowerMac 6400 PSU fan replacement
Post by: chrisNova777 on October 26, 2021, 08:18:12 AM
is the fan size 60mm --  to replace the PSU fan on most macs/pcs?

https://www.coolerguys.com/products/noctua-nf-a6x25-flx-quiet-computer-cooling-60mm-fan

oh ya the mdd was 2 x 60mm
most ATX psu's use 80mm? i think?

im heading to the store to grab some replacement parts myself
SimplePortal 2.3.6 © 2008-2014, SimplePortal