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AuthorTopic: powermac differences  (Read 4749 times)

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Offline hbarcellos

Re: powermac differences
« Reply #15 on: May 28, 2012, 01:50:25 PM »
Quote from: Kronos;694427
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?
}~ A1200 - Apollo 68040 - HOTLY running OS 3.1
}~ Powerbook G4 1.67 running MorphOS 3.2 without Wifi.
}~ Powermac Quicksilver 933 with Radeon 9600 XT (r300) LOUDLY running MorphOS 3.2
}~ [MY iOS GAME]: http://goo.gl/S9nWB (Amiga users can get it FREE[/color], just ask me)
 

Offline Iggy

Re: powermac differences
« Reply #16 on: May 28, 2012, 03:17:40 PM »
Quote from: hbarcellos;694465
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.
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Offline Vlabguy1

Re: powermac differences
« Reply #17 on: May 28, 2012, 03:20:03 PM »
Quote from: caver99;694399
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
 

Offline hbarcellos

Re: powermac differences
« Reply #18 on: May 28, 2012, 03:56:16 PM »
Quote from: Iggy;694466
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/quicksilver_noise/quieting_quicksilver_noise.html

Maybe yours had a replacement before you got it.
BTW, 9600 XT is not to loud...
}~ A1200 - Apollo 68040 - HOTLY running OS 3.1
}~ Powerbook G4 1.67 running MorphOS 3.2 without Wifi.
}~ Powermac Quicksilver 933 with Radeon 9600 XT (r300) LOUDLY running MorphOS 3.2
}~ [MY iOS GAME]: http://goo.gl/S9nWB (Amiga users can get it FREE[/color], just ask me)
 

Offline Kronos

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Re: powermac differences
« Reply #19 on: May 28, 2012, 04:01:40 PM »
@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.
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Offline Iggy

Re: powermac differences
« Reply #20 on: May 28, 2012, 05:11:40 PM »
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.
"Not making any hard and fast rules means that the moderators can use their good judgment in moderation, and we think the results speak for themselves." - Amiga.org, terms of service

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Offline Iggy

Re: powermac differences
« Reply #21 on: May 28, 2012, 05:14:35 PM »
Quote from: Kronos;694469
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.
"Not making any hard and fast rules means that the moderators can use their good judgment in moderation, and we think the results speak for themselves." - Amiga.org, terms of service

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Offline commodorejohn

Re: powermac differences
« Reply #22 on: May 28, 2012, 05:28:59 PM »
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...
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Offline Iggy

Re: powermac differences
« Reply #23 on: May 28, 2012, 05:33:18 PM »
Quote from: commodorejohn;694473
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.
"Not making any hard and fast rules means that the moderators can use their good judgment in moderation, and we think the results speak for themselves." - Amiga.org, terms of service

"You, got to stem the evil tide, and keep it on the the inside" - Rogers Waters

"God was never on your side" - Lemmy

Amiga! "Our appeal has become more selective"