Making the A4000 silent / A4000 PSU ventilation

[Jose]

What's up dudes. Since I was disappointed with the noise of the A4000 PSU I decided to start a thread on the best way to make the thing silent. That's one of the things I allways preferred on my A1200 over my noisy AMD PC.

So right now I was thinking about changing the PSU's fan.
By the way the PSU, at least mine, blows air out of the PSU both sides: out of the case, and with even more air flow to the inside. This is in contradiction with some previous thread where I saw people mentioning their A4000's PSU blowed air inside the case, others outside...

 Of course one could adapt a PC PSU, but is it worth the hassle? Could there be problems?

I think there a lot more A4000 owners interested out there. 8-)

[Jose]

" The IDE and SCSI cables to the drives at the front of the case almost blocked the vents in the front of the PSU, so no air could get in"

I also noticed that problem. Could there be a cool way of keeping an eye on the PSU temperature? Like installing one of those temperature measurement dedices some PC mod freaks use?
The cables on the back of my CD Rom actually toutch the PSU and I bet the CDRom itself probably stops a lot of air flow.

[Jose]

@Patrik

I'll defenitly check that out 8-)

[Jose]

I think I'll ditch out those metal works on the PSU case for now, never done such a thing... but the rest of the tips are cool, speciall the short CD/DVD Roms, though that implies ditching off my current one.

Any tips on super silent fans ?

[Jose]

Great! As for the FanMate wouldn't it be better to have some kind of device to monitor the temperature before lowering the fanspeed? I've seen plenty for CPU and motherboards but don't know how one could be used in a PSU.

Only 12db :-). I think I'll order one of those.

[Jose]

Seems that some of the Verax ones duesi mentioned, have  temperature controled operation which can be regulated.
 
They don't mention the noise in db though, just say they're silent...

I was looking at the PSU and was thinking, since the air is supposed to go outiside of the case on the back and and fan is situated to the inside the temperature sensor wouldn't work that well I guess...

[Jose]

Here's something  very interesting I read in a SOME REVIEW that included Verax fans:

"The Verax CAIRdB thermally controlled fans are one the most unique zero-noise fans in the marketplace that we have tested. The stealthy acoustical act is accomplished by tossing out convention and starting with a completely fresh impeller design. It's not surprising to discover that the company that created these fans has its background in research & development of fluid engineering.

So quiet are the Verax CAIRdB fans that you literally have to hold one up to your ear to hear anything - there is almost no discernible noise signature till the fand starts to kick into the 2000RPM range around 40 degrees Celsius. Even then, compared to other socket A heatsinks the CAIRdB KP2 fan is still positively quiet."


The things are expensive though, but to someone that gives silence very much value like me, I'll buy one soon.
That was a nice link duesi.  8-)

[Jose]

Hadn't noticed there was one with an external temp. sensor.
Sould be perfect then!

[Jose]

Hi.Need you guy's opinion again.
I'm gonna get a Verax one, but I'm kind of undecided as to wich model. The one that allows regulation of the temperature/ speed curve doesn't seem to allow an external temperature sensor. I'm more inclined towards the one with the external sensor, they say that it's more or less calibrated towards general PSUs, reaching 3500rpm at 45ºC and  2000rpm at 40ºC, so the question I have is this:
Do you think that covers the A4000's PSU? Does it get more hot than a general PC PSU? Of course, it depends on use, so consider both an averagely loaded one and one powering an heavily expanded A4000D wich is my planned future situation :-)