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View Full Version : PSU for fan


orion8888
04-25-2008, 07:21 PM
Hope you could help me with this, somebody suggested that I use my old psu to power my pc fans, so I could add more fans to cool my pc, Is this possible? has anyone done this?

Rick
04-26-2008, 09:16 AM
Yes it is

BUT

You need to check the power supply and see if it needs to have a power good signal

You can do this by using a jumper wire ( IF Needed)

Sorry I don't recall the correct wire to jumper at the moment.
( Been up to many hours)
Also you need to vent the second Power supply

I did this with an old server tower setup for redundant power supplies
So I have no problem with venting/air flow

Everything considered
If you are buying a new power supply to do this with.
Just find and buy a new larger power supply and replace the existing one ..

Turn off two at every shut down can be a pain

saphalline
04-26-2008, 05:20 PM
I agree with Rick, why use a separate PSU for such a lowly duty?

Just powering the fans!? It's not like case fans use a ton of power! They're like 1.6W a piece! Even a cr@ppy 400W bundled PSU should be able to handle 10 case fans in addition to the system's load!