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[hbarcellos]

Originally Posted by Kronos

G4 QuickSilvers only feature simple fans with buildin (primitive) temp-sensor. Replacing them with quality fans and adding some "smart" fan controller makes a huge difference.

Can you point out some suggestions for fans and controllers?

[Iggy]

Originally Posted by hbarcellos

Can you point out some suggestions for fans and controllers?

Anyone else want to field this.

I opened my old Quicksilver and there are only two fans.

One is on the power supply and the other apears to be a 120 mm case fan.

As I've said before, my Quicksilver is very quiet, so I suspect his system has at least one defective fan.

Also, if his 9600 video card isn't passively cooled, that my be making some noise.

[Vlabguy1]

Originally Posted by caver99

What is the difference between a G4 and a G5 for morph os will it work on the G5?

I still have 3 PowerMacs ..if anyone is interested..

Rich

[hbarcellos]

Originally Posted by Iggy

As I've said before, my Quicksilver is very quiet, so I suspect his system has at least one defective fan.

Hmm, I think I'm not alone, check this out: http://www.xlr8yourmac.com/systems/q...ver_noise.html

Maybe yours had a replacement before you got it.
BTW, 9600 XT is not to loud...

[Kronos]

@Iggy
1x PSU 1xcase and there should be a smaller one at the back (just were the CPU-module sits) but this may depend on CPU-speed.

Mine had those 3 + 1 on each CPU (so 5 total).

I replaced the PSU with a passive one (conversion from a standard ATX-PSU) but I would advise against it as it seems the PSU-fan is very important for the air-flow in the QS.

I bought an cheap 3 channel fan-controller for 3.5" bay and mounted it beneath the CD-ROM (removing the 2nd drive cover may look ugly but allows to monito temps and RPMs).

I than bought a bunch of 3-pin fans in the same sizes as the orginal ones (when it came to how many db/A and much much air/s I just had to take guesses).

Channel 1 : main CPU (read the one used by MorphOS)
Channel 2 : 2nd CPU + small rear fan
Channel 3 : case

Sensor 1 : in cooler right above main CPU
Sensor 2 : in cooler as far away as possible from main CPU
Sensor 3 : above CD-ROM

I might add a PSU fan or move the whole thing to a (bigger) PC-case in order to maximize airflow as the case gets a bit hot for my taste.

[Iggy]

Excellent point about the fan behind the CPU Kronos.
I'd forgotten about that one as I'd removed it on installation of an OWC processor card.
I don't think that one would be easily replaced though.

Your details on the others really useful.

[Iggy]

Originally Posted by Kronos

I might add a PSU fan or move the whole thing to a (bigger) PC-case in order to maximize airflow as the case gets a bit hot for my taste.

Not as hot as the MDD.
The temperatures in mine really bother me.
I like the case layout, but would sacrifice the sound level to increase cooling.

Perhaps if I can modify my 1.42GHz dual processor to a single CPU it will run cooler.

[commodorejohn]

I've heard a lot of people talk about heat issues in the MDD, but mine's really been perfectly fine. I did have to re-do the thermal paste on the CPUs, but once that was taken care of it hasn't been a problem since, even under load...

[Iggy]

Originally Posted by commodorejohn

I've heard a lot of people talk about heat issues in the MDD, but mine's really been perfectly fine. I did have to re-do the thermal paste on the CPUs, but once that was taken care of it hasn't been a problem since, even under load...

Well, that does give me some hope.
Running slower CPUs appears to be cooler so maybe overclocking a single 1.33GHz Xserve processor to 1.67 GHz will remain cooler then two 1.42 GHz CPUs.