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It is not the PSU. I have replaced it with an ATX PSU. It is the CPU fan, which is extremely loud. Sounds like a moped.

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You need a small cup, 99.9% alcohol (IPA) and a battery to repair your fan.

Here is how it looks like:



https://www.geit.de/tmp/PowerMac_FanCleanOrnamentalFountain.mov

Before the fan was loud like hell. After removing it from the case, you could hit the blade by hand and it did not even rotate 1/4 of a full rotation.

After running around 20 minutes in its bath, which looked very filthy after a short while if was like new. I put it back without any additional lubrication and it works since than for over three years. Recently it starts to making noice again, but it is runnning at least 18 hours a day for over three years.

Seems a lot of work for 3€ worth of fan.

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Well, I did it in the evening. No need to order and wait for a fan. No need to have the none working dismantled PowerMac around until the package arrives and you find the time to swap it.

So, yes. I prefer having it done in 30 minutes. :D

[quote]geit
thanks for tip, I try renew fans from powernac this way...

Back to topic:

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No 7/25

Collection number

I am back in the game.
I just updated my Power Mac Mdd 3,6, 1,25 GHz G4 with
Radeon 9600 GPU.
It‘s ok, but really loud.

So I am still looking foward to the Mirari Release.
We see us at Amiga40!

I may have forgotten already, but is there any proof that the Mirari team will at some point be testing their board with the T2081 (e6500 core)? All I have see being mentioned in press releases and seen in video demonstrations on their official YouTube channel are the T1042 (e5500 core).

The Mirari board also got some attention at Amiga40 in Germany, alongside the announcement of AmigaOS 3.3, AmigaOS 4.1 Final Edition Update 3, an update to the ExecSG Multicore plan for adding SMP to AmigaOS 4, and more.

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I thing that the Mirari is a great board and i am thrilled how just two guys make it happen in such a short time. I talked to Skateman at the Amiga40. And i told him that many of us MorphOS Users would like to have the board to be equipped with T2081. Because most of us use an G4 or G5. And the T1042 would be a downgrade with the missing Altivec Units.
I wonder how far we could overclock the T2081?

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I'm pretty sure going back to my 1.8GHz Quiksilver (which is close to the max what a G4 desktop can be) would be a downgrade for everything except a few edge cases.

AGP PMac G5 and the iMac? A much more mixed result, but the limitations in I/O and plausible GPUs makes it again a no brainer.

Even a PCIe G5 will struggle in I/O.

Noise, heat and the need for obscure 20+ year old parts....


Would I buy a T2081 Mirari? Sure, even at a premium.
Would I have skipped on the T1042 board if I knew for sure a T2081 would be coming? Only if it had been a question of months (which I doubt it will be).

I do plan to maintain 2 desktop MorphOS systems anyways, whether 1 is a G5 or both Mirari, doesn't really matter that much.

> just two guys make it happen in such a short time

Interestingly, it were four guys until August (not counting Trevor). But indeed, progress seems blazingly fast compared to that other project.

Maybe a next hw revision could have a CPU slot just like Pegasos?

You can't simply glue a T2081 SoC to the board as a T1042 replacement and have it working and there is no easy solution like a BGA socketed board, either. It also would raise the costs for a customer board even if it would be possible which kind of contradicts the goal to provide an affordable board, let alone all the implications this would have for a customer to get hold of such SoC or even put it onto the board.
Making the T2081 SoC based board work also needs various adjustments to the UBoot firmware which have not been done until the current day AFAICT, it won't run OOTB.

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I am lucky enough to be in the beta test phase and I would just like to second this. Don't underestimate the emphasis on noise and power. The Mirari is sitting on my desk about 2ft from my ears, in a tiny case, with the CPU fan set to 50% and a silent GPU. While the machine isn't silent like my Mac Mini (M4, not a G4) it's really pretty damn close. I would be happy to sit next to this all day long. All while the CPU (the hottest part of the system) is sitting around 43C (it obviously does get hotter but 51C was the most I've seen compared to 71C on my 5040).

Priceless in my opinion. Will I upgrade to the board with Altivec should it happen? Of course, but I'm very glad (and grateful) I was offered the opportunity to get involved with this board.