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So this morning, MBP on for about 20 minutes and this is the current state of my machine. Temp over 90c and fans running at 5,599 and 5,205. No video running, just MS Office apps, Teams, Chrome, Safari and App Store. Expected behaviour apparently 🤨

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For the apps you are using just install turbo boost switcher will cool the machine down significantly I believe.
None of them require the extra kick but the temps should settle at high 70s maybe low 80s.
I would at least give it a try.
Not a real solution but will add some longevity to the system.
 
So I currently don't have a personal computer (just the work laptop - on which I really don't want to do personal things). I originally wanted to grab a 16" for the performance.... but, as I don't really need advanced graphics and hearing these nightmares with the dGPU, I'm seriously reconsidering getting a 13".... or even worse, waiting for the ARM versions... though I really don't want to have to do without a personal computer for... probably a year.

Do the 13" MBPs function properly? I'm looking at grabbing the i7, 32GB, 1TB version. This'll be used mostly for iOS development, medium heavy music production, and the standard netflix/email/webbrowsing that a toaster can handle. I would be using it with an external monitor (DELL U2715H) plus the internal monitor.

I bought 3 Macbooks in the last month. 1 13", 1 16" (5500m) and 1 16" (5600m). Here are my very short reviews of each.

2020 13 inch

A decent amount of power in a small form factor but it gets obnoxiously warm under load and as a consequence the fan noise when under load was too much for me. It didn't get too hot on an external monitor, though. But, in order to maintain a decent cool to the touch daily working mode I had to permanently disable turbo boost. I returned this laptop.

2019 16 inch (i9, 5500m)

We all know the external monitor problems this one has. Fans at 3k rpm just idling on the desktop with a single monitor attached. Otherwise, pretty much the perfect machine. Due to external monitor noise, I returned it.

2020 16 inch (i9, 5600m)

An expensive fix but a fix none the less. As per my earlier postings this GPU runs at <12w with every configuration of external monitor I could throw at it. The i9 CPU also gets 100-150 more points in Cinebench than the 2019 i9 (even accounting for the difference between H and HK SKUs), did I just get a better unit or is there something else at play here? I don't know. Yes, the i9 9980HK outperforms an overclocked desktop i7 8700k with a Noctua NH-D14 cooler. Beast mode. I can even take video calls (Skype, Zoom, Google Meet, etc) with fans under 1900rpm and temps under 65c with an external monitor connected - amazing on a $4700 laptop LOL. I'll be *keeping* this laptop for many years.
 

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I bought 3 Macbooks in the last month. 1 13", 1 16" (5500m) and 1 16" (5600m). Here are my very short reviews of each.

2020 13 inch

A decent amount of power in a small form factor but it gets obnoxiously warm under load and as a consequence the fan noise when under load was too much for me. It didn't get too hot on an external monitor, though. To maintain a decent cool to the touch daily working mode I had to permanently disable turbo boost. I returned this laptop.

2019 16 inch (i9, 5500m)

We all know the external monitor problems this one has. Fans at 3k rpm just idling on the desktop with a single monitor attached. Otherwise, pretty much the perfect machine. Due to external monitor noise, I returned it.

2020 16 inch (i9, 5600m)

An expensive fix but a fix none the less. As per my earlier postings this GPU runs at <12w with every configuration of external monitor I could throw at it. The i9 CPU also gets 100-150 more points than the 2019 i9, did I just get a better unit or is there something else at play here? I don't know. I'll be *keeping* this laptop for many years.
Although you’re a data point of 1, if this Is reproducible then us 5300/5500 users are screwed as it seems this requires a hardware revision to fix it.
 
Although you’re a data point of 1, if this Is reproducible then us 5300/5500 users are screwed as it seems this requires a hardware revision to fix it.

Are you saying a sample size of 1 isn't reliable? *shock* ;)

A friend of mine is buying the 5600m today as well, I'll see if he can replicate for y'all.
 
Are you saying a sample size of 1 isn't reliable? *shock* ;)

A friend of mine is buying the 5600m today as well, I'll see if he can replicate for y'all.
Cool let us know.

Thought about going for the 5600, but it's probably going to cost me crazy amounts of money as Apple is only willing to take $1600 on trade in for a 8 month old loaded MBP 16 that I paid $3600+Tax for.
 
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In a wider context:
Basically any notebook with very basic "Intel UHD Graphics" can drive 2 additional external 4K displays at 60Hz and uses less than 1W for that... And we're talking about 20W-12W-8W... And we're told this is the expected...
It is very far from acceptable I think.
 
In a wider context:
Basically any notebook with very basic "Intel UHD Graphics" can drive 2 additional external 4K displays at 60Hz and uses less than 1W for that... And we're talking about 20W-12W-8W... And we're told this is the expected...
It is very far from acceptable I think.

They are trying to push the "reality distortion field" again.
 
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So the 5600m is confirmed to not have these issues due to the HBM2 memory? Interesting.

I have a i7/32GB/5500 8GB coming next week, if it has these issues I guess I'll just go for that upgrade
It‘s not 100% clear that it‘s due to the HBM2 memory
This issue could definitely be fixed by developing better drivers. The decision to set the clocks at highest speed when a second monitor is connected is software and If the monitors are synchronized this shouldn’t happen:

The issue could also be fixed if macOS wasn't designed to automatically switch to the dedicated gpu as soon as an external monitor is connected, especially if that GPU is so power hungry.
 
2020 16 inch (i9, 5600m)

An expensive fix but a fix none the less. As per my earlier postings this GPU runs at <12w with every configuration of external monitor I could throw at it. The i9 CPU also gets 100-150 more points in Cinebench than the 2019 i9 (even accounting for the difference between H and HK SKUs), did I just get a better unit or is there something else at play here? I don't know. Yes, the i9 9980HK outperforms an overclocked desktop i7 8700k with a Noctua NH-D14 cooler. Beast mode. I can even take video calls (Skype, Zoom, Google Meet, etc) with fans under 1900rpm and temps under 65c with an external monitor connected - amazing on a $4700 laptop LOL. I'll be *keeping* this laptop for many years.

Finally we can do quiet Zoom calls with an external monitor all for the low low price of $4700! Apple is definitely a leader in innovation!
 
It‘s not 100% clear that it‘s due to the HBM2 memory

The issue could also be fixed if macOS wasn't designed to automatically switch to the dedicated gpu as soon as an external monitor is connected, especially if that GPU is so power hungry.
That's not a macOS design but a MacBook Pro design.
 
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For the apps you are using just install turbo boost switcher will cool the machine down significantly I believe.
None of them require the extra kick but the temps should settle at high 70s maybe low 80s.
I would at least give it a try.
Not a real solution but will add some longevity to the system.

I do have Turbo Boost switcher already and it makes a bit of a difference, but not enough to make it acceptable. Also, I don't think I should let Apple get away it - I shouldn't really need to add 3rd party software that disables a key feature to make it usable from a fan noise / heat perspective.
 
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It‘s not 100% clear that it‘s due to the HBM2 memory

The issue could also be fixed if macOS wasn't designed to automatically switch to the dedicated gpu as soon as an external monitor is connected, especially if that GPU is so power hungry.
Now that would be impossible unless you redesign the logic board. Every Macbook with a dGPU has the external video connectors HARDWIRED into the Nvidia or AMD chip. Only the LCD is physically connected to the intel GPU. PC manufacturers use a different approach where the intel GPU is hardwired to the external connectors and the dGPU then uses the Intel GPU as the passthrough.
 
Finally we can do quiet Zoom calls with an external monitor all for the low low price of $4700! Apple is definitely a leader in innovation!
All of this just drives up the resale price of the 15" machines. I have returned the 16" and am keeping two 15" 2017. They work so quietly compared to that 16" noisy frying pan!
 
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I do have Turbo Boost switcher already and it makes a bit of a difference, but not enough to make it acceptable. Also, I don't think I should let Apple get away it - I shouldn't really need to add 3rd party software that disables a key feature to make it usable from a fan noise / heat perspective.
Of course don't stop bugging apple. I don't understand why people pay extra $700 + tax to get rid of a problem instead of pressuring apple for a fix either but I was just saying that if for some reason you don't have it running yet, in most cases you presented there's no need for turbo on. Basically extra heat for nothing.
 
I love your solution :D It must be a software bug. I think I've heard somewhere that Apple has delegated GPU Bootcamp driver development to AMD. Maybe it's the same for macOS? From what I know AMD has not released any driver updates since 16"s release and their track record with drivers is.. well.. unsatisfactory. Could this explain the situation?

Yesterday, AMD updated the Boot camp drivers for the MBP with 5600M. The ones for 5300 and 5500 remain unchanged, though :(
 
Just to add to the possible software/driver problem:



This seems to be it. I guess we could also turn our frustrations more towards AMD too, to fix it in a update?

Anyway, for now the solution seems to try different monitors that use actual standards LCD timing:

I also had this problem but with a 144Hz monitor and standard timings didn't work for me at 144hz( monitor goes into standby) and I lowered the refresh rate to 141Hz and that allowed my vram clock to stay at 200mhz idle.

Some monitor manufacturers simply don't use standard LCD timings and that's what causing this issue. Idk why they are using non standard timings...cost savings, low quality panels idk I can only speculate.

It is not normal, but at the moment the only fix is to change your refresh rate to 120hz or 142hz.

check here

Hope AMD will fix this soon, more and more people report every day.









AMD answer on June 2: says it’s expected.

I checked with the product team and their feedback is that depending on specific display configurations (resolution and refresh rate combinations) and background tasks, RX 5000 Series GPUs may maintain memory frequency to ensure an optimal user experience. This behavior is expected and does not impact the RX 5000 GPU in any way.

NVIDIA cards used to suffer the same problem, but they’ve fixed it updating the drivers:


Some people had the same kind of problem even with the Vega 56 (which uses HBM2 memory, same as 5600M):



So, although it seems less common, it still happens, so I guess we could point towards a driver problem. Meanwhile, it seems that the solution is matching monitors.
 
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Just to add to the possible software/driver problem:



This seems to be it. I guess we could also turn our frustrations more towards AMD too, to fix it in a update?

Anyway, for now the solution seems to try different monitors that use actual standards LCD timing:
Great finding! Yes, I think that's could be the problem, drivers and different panels.
So it seems that we should experiment more with switchresx individually.
 
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So is it confirmed that the 5600m doesn’t experience these issues? I’m tempted to sell my 2019 16’ and get the 2020 version with 5600m because my current machine is unusable in it’s current state. But being as it’s July I know a refresh is coming soon. Not sure if I should buy the 5600m machine or wait for newer models.
 
So it seems that we should experiment more with switchresx individually.
Interesting from a tech perspective..., but why should I need to experiment with a super expensive pro grade notebook ? I've paid premium price exactly not to experiment.
This notebook must work out of the box, event the smallest flaw is unacceptable at this price range.
 
Interesting from a tech perspective..., but why should I need to experiment with a super expensive pro grade notebook ? I've paid premium price exactly not to experiment.
This notebook must work out of the box, event the smallest flaw is unacceptable at this price range.

Because typical apple customer takes a loss and buys a more expensive unit to fix it.
Why would apple care when only few people make noise while they are making more money?
That's how I am starting to see it after reading this thread.
 
Interesting from a tech perspective..., but why should I need to experiment with a super expensive pro grade notebook ? I've paid premium price exactly not to experiment.
This notebook must work out of the box, event the smallest flaw is unacceptable at this price range.
Yeah, just a workaround for now, it could be Apple or AMD fault...
 
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