PSU Fan CLooking

Fothsn · 11 Oct 2008 at 13:37

Looking to see if it’s a good idea to take a main 12CM fan from a PSU and install a silent one and run it of a fan controller rather then connected to the PSU main board, is this a good idea and has anybody got any tips?

Edit/ Have no idea how the title got that messed up, it’s meant to say 'PSU Fan Changing'

Monkeynut · 11 Oct 2008 at 13:39

What PSU is it?

Fothsn · 11 Oct 2008 at 13:42

Monkeynut said:
What PSU is it?

Well not a decent brand, just a normal EZ-Cool 650W, its marketed at being silent but its far from it, my OCZ is much quieter and it’s not a silent PSU

Super Silent rated at 23dBa

Fothsn · 11 Oct 2008 at 18:02

Okay have managed to change the fan fine! and connect it to my fan controller

Now it’s nice and quiet but my main concern is if this can do any damage as the fan is running at a much lower RPM I can actually feel the PSU is hotter, do PSUs shutdown to prevent damage if they get hot?

Monkeynut · 11 Oct 2008 at 18:05

Cheap ones don't usually. That's why the fans are set up to spin fast.

EsaT · 11 Oct 2008 at 22:08

EZ-Cools are crap and then you'll remove its cooling...
Did you run out of ideas how to break PC or didn't PC fit to dishwasher?

You better hope that it won't take whole PC to grave when it decides to blow up.

Monkeynut · 11 Oct 2008 at 22:48

EsaT said:
EZ-Cools are crap and then you'll remove its cooling...
Did you run out of ideas how to break PC or didn't PC fit to dishwasher?

You better hope that it won't take whole PC to grave when it decides to blow up.

A bit less subtle than what I was going for, but yeah basically.

jimmy29 · 11 Oct 2008 at 23:08

If you're going to contine with the contoller I suggest getting a temperature probe on one of the heatsinks in the PSU.

Fothsn · 12 Oct 2008 at 00:34

EsaT said:
EZ-Cools are crap and then you'll remove its cooling...
Did you run out of ideas how to break PC or didn't PC fit to dishwasher?

You better hope that it won't take whole PC to grave when it decides to blow up.

Sorry? You may be pleased to know I have installed a much better fan that can much move more air at lower RPM then the Chinese 1p fan that was in it, you have a very good analogy there, changing a fan around is like putting a PC in a dishwasher yeah okay. I’ve being looking at a lot of websites on how to remove and change fans and there danger as I was not confident befor hand to change them over, but it’s done a lot and is safe if you do it correctly.

decto · 12 Oct 2008 at 00:44

The danger isn't changing the fan, it's removing the automatic control so it can't speed up when it needs to. The obstructions in the PSU casing will cause noise, so it's not easy to quieten a PSU. One problem with cheap PSU's is they use small (cheap) heatsinks which need the higher airflow to do their job.

If you musy change it, look for a fluid bearing fan of similar spec and do a straight swap, leave the control circuit where it needs to be.

AD

Fothsn · 12 Oct 2008 at 13:08

decto said:
The danger isn't changing the fan, it's removing the automatic control so it can't speed up when it needs to. The obstructions in the PSU casing will cause noise, so it's not easy to quieten a PSU. One problem with cheap PSU's is they use small (cheap) heatsinks which need the higher airflow to do their job.

If you musy change it, look for a fluid bearing fan of similar spec and do a straight swap, leave the control circuit where it needs to be.

AD

Ah thanks for the info

My PSU hasn’t gone bang yet so it’s all good!

It’s only running some very low power Intel parts so it’s not putting a lot of stress on it. I don’t suppose you could recommend some PSUs fans could you? The connector on them is different I’ve noticed.