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Replacing PSU Fan.

U

UtopiA

2[H]4U
Joined
Oct 13, 2007
Messages
3,509
The fan on my OCZ GameXStream (600w) recently started making a lot of noise.
I took it apart and cleaned the fan, but no luck.

So I remounted one of my spare 120mm fans into the PSU to replace the original.

Everything is working fine, however, the replacement fan doesn't seem to be moving as much air as the original. I checked the air coming out the PSU exhaust (back of the tower) and it doesn't appear as much air is being pushed out.

Could this be a problem? I'm worried the PSU might overheat, but I don't know how likely that is, or how important it is for the fan to be pushing a lot of air...
The fan I used is a 120mm Aspire which I originally took out of my case, since the Ultra120 Extreme blocks the sidepanel fan.
 
Alot of PSUs have thermostatically controlled fans. The thermostat only supplies additional voltage when the PSU warms up. So the fan in the PSU probably has a higher speed, and you replaced it with a lower-speed fan that is not getting much voltage due to the thermostat. Theoretically the fan should speed up when your PSU gets warm, but the replacement fan's full-speed may not be sufficient.

You could try getting a higher speed fan or asking OCZ for a replacement. I would just ask OCZ to RMA the fan. I had to do that with my OP750 through Silverstone.
 
bicycle_wreck said:
Alot of PSUs have thermostatically controlled fans. The thermostat only supplies additional voltage when the PSU warms up. So the fan in the PSU probably has a higher speed, and you replaced it with a lower-speed fan that is not getting much voltage due to the thermostat. Theoretically the fan should speed up when your PSU gets warm, but the replacement fan's full-speed may not be sufficient.

You could try getting a higher speed fan or asking OCZ for a replacement. I would just ask OCZ to RMA the fan. I had to do that with my OP750 through Silverstone.
Click to expand...
I just looked up the fan, and found this:
It incorporates dual ball bearings and is rated for up to 2,500 rpm at 12V
Click to expand...

The PSU does use an onboard fan controller, up to 2500 RPM for full load.
If I put a 2500 RPM fan into the PSU, would I be alright? Even if I don't use the onboard controller... I suppose it would run at full RPM the entire time.
 
UtopiA said:
The PSU does use an onboard fan controller, up to 2500 RPM for full load.
If I put a 2500 RPM fan into the PSU, would I be alright? Even if I don't use the onboard controller... I suppose it would run at full RPM the entire time.
Click to expand...

It would be ridiculously loud. Contact OCZ about a replacement fan. I doubt they'll give you any trouble.
 
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