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AdamSeen

macrumors 6502
Original poster
Jun 5, 2013
350
423
Some amazing news. The new Mac Studio is going to be significantly quieter at idle!!!

Old Mac Studio:

Idle2.5 (K V = 0.3)15
Wireless web2.5 (K V = 0.3)15

New Mac Studio:

Sound Power Level
L W A,m (B)
Sound Pressure Level
Operator Position
L p A,m (dB)
Idle1.5 (K V = 0.3)6
Wireless web1.5 (K V = 0.3)6



Thank you Apple for listening - our prayers have been answered!

Edit1:

The new fan default speed has been lowered from 1300 RPM to 1000 RPM.

Edit2:

I've completed analysing the Mac Studio M2 (Max base, 64tb), recorded on an RE20 studio mic.

Compared to the first generation:

1) It is significantly quieter - I can barely hear it at all in my quiet office.
2) I've detected no whine.

The last sonically great high performance desktop was the iMac Pro 2017, the M2 now takes it's crown and is even better than it was. Subjectively, the noise when the fans spin up is very pleasant. I'm happy to say I would definitely recommend this one if you've been on the fence.

Results and samples below:


The image below shows two tracks with individual y axis which shows a spectrogram from 0 - 19,000hz. The top track is the microphone directly facing into the airstream. The bottom, is off to the side.

The x axis spaces short audio clips taken at readings of 1000 (new idle), 1300 (previous idle), 1600, 2300 & 3500rpm.

You'll notice there's no whine around the 2.14Khz mark.


Screenshot 2023-06-14 at 20.04.33.png


Compare this with the old one where at 2.14Khz there was a distinct band, which was the whine.


Screenshot 2022-04-04 at 21.57.45.png



Here are the samples that match with the images above.

Mac Studio Direct - The microphone is faced directly into the airstream (+several decibels so you can hear it)



Mac Studio Indirect - The microphone is not facing into the steam, it is very close by (+several decibels so you can hear it)




Edit 3:

Pushing the machine, I could get it to 1200RPM.

At nearly 100% usage of most things (E-CPU, P-CPU, Neural engine, GPU) - total package power peaked at 76watts on the M2 Max base (no idea what TDP of the M2 Max base is). I saw peak power hitting 120watts for a split second on a few occasions, but then the system crashed or processes failed - so maybe some tweaks on Apples end. I didn't push it to it's absolute max as couldn't run some of the benchmarks I wanted to due to time and GFX bench wasn't working.

When the cores reached around 90c (194 freedom units), the fan started kicking up to a max speed of 1200RPM. The back temperature reached 47.4c (117.32f). Overall, quiet as hell, I couldn't get it to reach the 1300RPM base speed of the original.

This was the Studio they should have designed from the beginning. It's going to be telling to see a teardown and see if there are any physical changes, or it's just a fan curve change.

Screenshot 2023-06-16 at 09.40.15.png

20230616T094253 2.jpeg

* Ambient temperate was 22.3c.

Edit 4:

Ifixit have completed a tear down and found it’s the same internals as the first gen. No obvious cooler changes, it appears the only major change apart from the chips themselves is a fan curve change.


Edit 5:

Some whine captured: #113
 
Last edited:

Traverse

macrumors 604
Mar 11, 2013
7,710
4,489
Here
Anyone else notice the vertical lines behind the exhaust holes? Were they there in the marketing images from the first generation? I'm wondering if this hints a a subtly refined cooling system. Or perhaps a confirmation of the theory that the "whine" was due to the precise measurements of airflow.

0001.jpg
 

novagamer

macrumors regular
May 13, 2006
216
294
God I hope they fixed this. The Pro seems like a stupid, stupid buy right now. M3 (or 4) with "Extreme" variant may change this but for now I see no reason other than noise & wanting everything in one box to get a Pro. You could sell your Studio and buy another one when the M3 Ultra comes out for the price difference, it's insane.
 
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AdamSeen

macrumors 6502
Original poster
Jun 5, 2013
350
423
Why on earth would you give Apple more money, after 95 pages of complaining on your other post ?
I left a fairly balanced view in the first post (good/bad/ugly) after returning the studio and then mostly left the thread. Seeing as though there is no iMac Pro alternative and I’ll need the Apple silicon within the next year or so, I have little choice.

However, since retuning the studio ultra I have moved most of my GPU compute to my 4090 PC.
 

AdamSeen

macrumors 6502
Original poster
Jun 5, 2013
350
423
God I hope they fixed this. The Pro seems like a stupid, stupid buy right now. M3 (or 4) with "Extreme" variant may change this but for now I see no reason other than noise & wanting everything in one box to get a Pro. You could sell your Studio and buy another one when the M3 Ultra comes out for the price difference, it's insane.
I think they will have fixed the whine, they would have definately seen the threads here (hi Apple 👋) and got plenty of complaints.
 
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bobcomer

macrumors 601
May 18, 2015
4,949
3,697
Why on earth would you give Apple more money, after 95 pages of complaining on your other post ?
If you're talking to me, the answer is I don't hate Apple for it, just the Studio and it's crappy design. Everybody makes mistakes. This is the 2nd Mac I've bought since I bought the Studio. (But the other one was an intel iMac)
 

Ethosik

Contributor
Oct 21, 2009
8,138
7,112
Plenty of people had no whine, so it sounds more like a quality control thing than some intractable design fault.
Well a lot of people wouldn’t be able to hear it. Out of the 30 people I had listen to mine. Only 3 heard it. And my head has to be at a specific angle to hear it.
 
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novagamer

macrumors regular
May 13, 2006
216
294
Well a lot of people wouldn’t be able to hear it. Out of the 30 people I had listen to mine. Only 3 heard it. And my head has to be at a specific angle to hear it.
Yes, many people have substantial hearing loss in upper frequencies and have no idea because they were reckless, and some does occur naturally with age.

I have protected my hearing at every live show since I was young, it makes a huge difference and I have the audiologist results to prove it.

The high-pitched coil whine sucks for Pro Audio work in a treated studio environment which is my use case for this machine. Fingers crossed they dealt with it because there’s no chance in hell I’m shelling out for that overpriced under-featured Mac Pro.
 

AdamSeen

macrumors 6502
Original poster
Jun 5, 2013
350
423
Guys, some amazing news. The new Mac Studio is going to be significantly quieter at idle!!!

Old Mac Studio:

Idle2.5 (K V = 0.3)15
Wireless web2.5 (K V = 0.3)15

New Mac Studio:

Sound Power Level
L W A,m (B)
Sound Pressure Level
Operator Position
L p A,m (dB)
Idle1.5 (K V = 0.3)6
Wireless web1.5 (K V = 0.3)6



Thank you Apple - our prayers have been answered!
 

theluggage

macrumors 604
Jul 29, 2011
7,979
8,390
Well a lot of people wouldn’t be able to hear it. Out of the 30 people I had listen to mine. Only 3 heard it. And my head has to be at a specific angle to hear it.
...which is why I've also gone looking with a spectrum analyser on my iPad (and high-pitched test signals out of my hearing range to check that it is working). All I saw was pinky-white-ish noise across the spectrum, barely above the noise floor. Ok that's not bulletproof evidence, but its better than "nah, can't hear it, isn't there". It would be interesting to see a more scientific test (someone out there in Studio-land must have suitable test gear?)
 

theluggage

macrumors 604
Jul 29, 2011
7,979
8,390
Guys, some amazing news. The new Mac Studio is going to be significantly quieter at idle!!!
Good to know but the problem was the whine that some people were getting, which I don't think was ever part of the spec!

Without the whine, the idle noise was really a non-issue anyway - sure, the iMac and MBP may be silent at idle, but give them any substantial work to do (like, say, a bunch of audio plug-ins) and they rapidly became far noisier. I've never known my Studio to get noticeably louder than idle - even when artificially stressed by something like Cinebench, which would have Intel Macs roaring.
 

James_C

macrumors 68030
Sep 13, 2002
2,847
1,897
Bristol, UK
Guys, some amazing news. The new Mac Studio is going to be significantly quieter at idle!!!

Old Mac Studio:

Idle2.5 (K V = 0.3)15
Wireless web2.5 (K V = 0.3)15

New Mac Studio:

Sound Power Level
L W A,m (B)
Sound Pressure Level
Operator Position
L p A,m (dB)
Idle1.5 (K V = 0.3)6
Wireless web1.5 (K V = 0.3)6



Thank you Apple - our prayers have been answered!

Hopefully great news, I have held off for a year buying one, as I hate audible fan noise from my Mac's. I know a number have said it was fine, but I decided to wait. Have now put an order for a Base Studio with 2TB of SSD as it is my Primary Photo Library, I know I could have put it on an external SSD, but I wanted the library on my Mac.
 

Freida

Suspended
Oct 22, 2010
4,077
5,874
This was tested on the Ultra configuration which has better heatsink anyway. I wonder if its the same for Max too.


Guys, some amazing news. The new Mac Studio is going to be significantly quieter at idle!!!

Old Mac Studio:

Idle2.5 (K V = 0.3)15
Wireless web2.5 (K V = 0.3)15

New Mac Studio:

Sound Power Level
L W A,m (B)
Sound Pressure Level
Operator Position
L p A,m (dB)
Idle1.5 (K V = 0.3)6
Wireless web1.5 (K V = 0.3)6



Thank you Apple - our prayers have been answered!
 

AdamSeen

macrumors 6502
Original poster
Jun 5, 2013
350
423
This was tested on the Ultra configuration which has better heatsink anyway. I wonder if its the same for Max too.
I'm confident it will apply to both - because going back several generations of Macs, whenever there have been variations between the models due to specs (e.g. faster processor), Apple has always separated out the figures.
 
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Adult80HD

macrumors 6502a
Nov 19, 2019
695
824
Im Hoping for this. That they’ve nailed down whatever variance was causing it.
Good to know but the problem was the whine that some people were getting, which I don't think was ever part of the spec!

Without the whine, the idle noise was really a non-issue anyway - sure, the iMac and MBP may be silent at idle, but give them any substantial work to do (like, say, a bunch of audio plug-ins) and they rapidly became far noisier. I've never known my Studio to get noticeably louder than idle - even when artificially stressed by something like Cinebench, which would have Intel Macs roaring.
Exactly on the *some* and it's really some Studios, not some people. I have three for my business--only one of them has the whine. I think the assessment that its coil whine is correct--there is more than one power supply design used in the Studio. Given the frequency and how the noise might interact with the air outlet, I'm not at all surprised that blocking some of the holes might make it go away, but the fact that only some of the Studios have it is a clear indication that it's NOT the fan or holes that's the source, but something else going on.

FWIW, I can only hear the one with the whine in a dead silent room. Even the subtle noise of the AC/Heating system running totally drowns it out. As a result its never bothered me enough on the one that has it to make a fuss and send it back. Also, it most definitely is not a constant thing--sometimes the room is dead silent and the noise is not there.
 
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kraiggers

macrumors newbie
Jul 28, 2019
12
4
I hope very much the M2 Max has the copper cooler, or at least gas fixed the issue. I just ordered one and I’d *really* prefer not to have this issue…

Is there any sense of how prevalent the issue was amongst the M1 Max Studios?
 

Freida

Suspended
Oct 22, 2010
4,077
5,874
It doesn't have the copper cooler as there is still weight difference between Max and Ultra (due to the material) so its still different fans.
Lets hope though that the whistle was fixed. I assume its the PSU causing it as its definitely not dust in the holes.

I hope very much the M2 Max has the copper cooler, or at least gas fixed the issue. I just ordered one and I’d *really* prefer not to have this issue…

Is there any sense of how prevalent the issue was amongst the M1 Max Studios?
 
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