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(2019) 16" is HOT & NOISY with an external monitor! :(
- Thread starter Appledoesnotlisten
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Not fixed yet. Latest OSX update.
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So a request. Could someone with a Thinkpad P-Series (P53 etc) post what you are pulling for wattage in clamshell with an external versus open lid with an external.
An external that's at least 4k.
An external that's at least 4k.
Hi @Roystal,
>> Im not much of a tech geek so i really have no idea what Inter CPU turbo-boost is and whether disabling it will affect my MBP in any way.
You could consider Intel "Turbo-Boost" as on-the-fly dynamic overclocking of your CPU without breaking its Thermal Design Point (TDP) boundary.
For example, 16" MBP-2019 machines sell with 2.3GHz 8-core Intel i9 processor with "Turbo-Boost" up to 4.8GHz, meaning that the CPU cores will operate at 2.3GHz most of the time, unless there's additional system load, on which event a CPU core could reach up to 4.8GHz to improve user's perceived performance, without frying the CPU/motherboard/logicboard due to the additional heat generated. A similar feature for AMD processors is known as "Turbo-Core".
>> Regarding this, are there any downsides to doing this?
To the best of my knowledge, there's no negative impact on hardware by disabling Turbo-Boost. In fact, it can save power, and thereby increase the battery life of your machine. Screenshot below from one of the linked articles above on thermal-impact results after disabling turbo-boost:
>> Im also still experiencing 18-19W on the Radeon GPU even in clamshell mode at 2560x1440 resolution but not 1080p at 60hz, is this possibly a wire issue? Im using a pretty ****** HDMI to HDMI cable with the mac adapter.
According to the previous posts (start here), this is very likely not to be a wire issue i.e. people reported the same issue with official Apple USB-C to HDMI/Display-Port adapters, or with the TS3+ docking station. I for myself am using the official USB-C Digital Multiport Adapter from Apple and seeing this issue even on my third MBP-2019.
>> I've updated to the 10.15.4 , same problems, same issues, and i only have a few days with apple support as i did not get Apple Care at all.
If the primary use-cases of your laptop (MBP-2019) involves using both the laptop's retina display _and_ one or more external displays simultaneously, my recommendation would be to avoid buying it.
My rationale is that it is an expensive machine. For most of us, it'll stay with us for a good couple of years. Remember that you'll very likely to suffer from this issue on several occasions over these years, until you move to something else (or until Apple acknowledges this issue and offers a fix, which, as the rest of the thread will confirm, happens only once in a blue moon).
Also, as @Appledoesnotlisten raises the point here, the issue could be with the logicboard design that's unfixable witn software or OS updates, which means that the issue will very likely _never_ be fixed. Thanks.
>> And also thank you for being active on this sub, this issue has been bugging since i started using an external monitor this sub has been more useful than Apple.
You are very welcome, and I'm glad that you've found the information shared here useful. If you find additional information on this issue, please share with the forum.
Thank you.
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@AMTYVLE
- You should be fine if you are in "clamshell" mode.
- You would very likely be complaining about "hot &noisy fan" (like the rest of the thread) if you are in "open-lid" mode i.e. using both the MBP retina display _and_ one or more external displays simultaneously.
Either way, please let us know the actual numbers once you receive the display. A table like this would be rather useful.
Thanks a lot.
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I am running a 16" and an LG 49WL95C. Right now the fans are ~1800 and it's sitting at 65*. Replacing an iMac with this setup. Needed a Windows friendly solution for my work laptop, and this monitor is great for my workflow. Had to go with a 16" for the AMD GPU to drive the monitor at it's native resolution.
EDIT: Should add that I am doing a Time Machine backup, downloading OneDrive files, and have Safari, Mail, Calendar, Messages, Twitter, News, Photos, Music, 1Password, iStat all running.
EDIT: Should add that I am doing a Time Machine backup, downloading OneDrive files, and have Safari, Mail, Calendar, Messages, Twitter, News, Photos, Music, 1Password, iStat all running.
clamshell or are you using internal screen as well?
Time Machine and One Drive definetely make the CPU and overall machine increase the heat.
I think at this point it's well understood that internal+external is essentially a no go.
There is anecdotal evidence that different refresh rates, scaling and cable connections can have an effect on clamshell mode.
Shall we make a list of working and non-working clamshell setups?
Working -
LG 27GL850 - 2560x1440 - 99,8MHz - Belkin USB-C -> HDMI
+ (3840x2160) - 60hz - usb-c to usb-c cable
P2415Q - 3840 x 2160 - 30Mhz - Apple USB-C to HDMI
P2415Q - 2560 x 1440 - 24/5Mhz - Apple USB-C to HDMI
Non-working -
LG 27GL850 - 2560x1440 - 99,88MHz (@Norbert Mikołajczyk can you confirm?) - Unitek USB-C to DisplayPort 1.2
Dell 2715H - 2560x1440 - 60MHz - Anker 5-1 USB-C hub to HDMI
Dell 2715H - 2560x1440 - 60MHz - USB-C to HDMI
Dell U2518D - 2560x1440 - 60hz - USB-C to HDMI
Dell U2719dc - 2560x1440 - 60hz - USB-C - HDMI/DP
38GL950G - @x3sphere can you confirm resolution, refresh rate and connection method?
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I upgraded to a 38GL950G monitor recently and I found my MBP's 5500M will now draw 19W even in clamshell mode. Fans are now quite loud. BummerOn my 34GK950F it didn't, even at high refresh rates.
Anyone know if using an eGPU avoids the issue? I assume it'll go back to the idle wattage if I connect the external monitor to an eGPU.
Can let us know your exact settings and method of connection?
it may be worth trying a few different refresh rates if you can. This has worked for a few users
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@gsab
Are you able to run this at it's full resolution in clamshell without it hitting 18/19w?
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These are my test results using different configurations (idle system state)
LG 27UL850-W, 4k-60:
usb-c to usb-c: closed lid 4-5W / open lid 18W
usb-c to hdmi: closed lid 4-5W / open lid 18W
satechi usb-c+hdmi cable (4k30): closed lid 4-5W / open lid 18W
pretty much the same numbers with a Samsung 4k60 TV.
LG monitor+Samsung+open lid 19-20W, closed lid 18-19W
Here are some numbers I got after monitoring the GPU wattage in bootcamp (windows), also in idle after all the updates:
Internal only: 14W
Internal + LG 4k60 Monitor: 13W
LG 4k60 only and internal screen turned off: 3W!
And just to get some reference:
LG 4k60+Samsung 4k30+internal screen(extended desktop): YouTube 4k video on both external screens result in 18-25W GPU usage! (monitored with gpu-z)
Starting to look like an AMD problem.
LG 27UL850-W, 4k-60:
usb-c to usb-c: closed lid 4-5W / open lid 18W
usb-c to hdmi: closed lid 4-5W / open lid 18W
satechi usb-c+hdmi cable (4k30): closed lid 4-5W / open lid 18W
pretty much the same numbers with a Samsung 4k60 TV.
LG monitor+Samsung+open lid 19-20W, closed lid 18-19W
Here are some numbers I got after monitoring the GPU wattage in bootcamp (windows), also in idle after all the updates:
Internal only: 14W
Internal + LG 4k60 Monitor: 13W
LG 4k60 only and internal screen turned off: 3W!
And just to get some reference:
LG 4k60+Samsung 4k30+internal screen(extended desktop): YouTube 4k video on both external screens result in 18-25W GPU usage! (monitored with gpu-z)
Starting to look like an AMD problem.
Thanks can you do me a favour and check clamshell mode - 2560x1440 @60hz ?
That seems to be problematic configuration
Unfortunately I cannot test your requested resolution, since I don't have a monitor like that.
Also you cannot change the actual resolution of a monitor natively in MacOS.
If you change the "resolution" in settings, it only upscales or downscales the userinterface, but stays at the maximum resolution of the Monitor.
I think there are 3. party apps that can do this.
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I was wondering the same thing. But I guess with open lid yes, closed lid not.
Would be nice if someone could actually test that!
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I have thought of getting the MBP 16" with the 5500 rather than waiting and waiting for the W5700x to be released for the Mac Pro
It's weird that the additional USB-C ports on the XDR will run at USB 3.1 with a MacBook Pro but only at USB 2.0 with the 580x (this is the reason I have been waiting for the W5700x)
Should I just say "F" it and get the MBP16" (of course, what if Apple is about to add a 10th Gen chip to the MBP 16")
Paralysis by analysis!
- 3840 x 2160 @30 Hz is the highest (Retina) resolution I can have on P2415Q
- 30Hz is the highest refresh-rate I can get over HDMI with my P2415Q screen (I currently don't have a USB-C-to-DP cable which could push it to 60Hz).
The Radeon power consumption behavior is unchanged for me irrespective of any resolution change on the P2415Q in open-lid mode i.e. draws ~19-20 W irrespective of resolution.
EDIT: will update about the clamshell mode in a bit. Thanks.
The Radeon power consumption behavior is unchanged for me irrespective of any resolution change on the P2415Q in clamshell mode i.e. draws ~6-7 W irrespective of resolution.
As said, the highest resolution I can reach is 3840 x 2160 @30 Hz over HDMI on my P2415Q. The newer P2415Q can do 60Hz over HDMI.
Thank you.
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Thanks. If 2560x1440 @60hz is available in clamshell it would be great to know if that works properly.
Hi @Grammar1,
I have updated my results in "clamshell" mode above. I can't unfortunately test for 60Hz - my P2415Q won't offer 60Hz over HDMI (only does over DisplayPort), and I don't have access to a USB-C-to-DisplayPort cable at the moment. However, you can see @Appledoesnotlisten's results here and here which I think clarifies that 60Hz should also be fine in "clamshell" mode.
Thank you.
Thank you all for sharing this information! I thought my machine was alone in experiencing these issues but apparently not at all! I submitted feedback to apple to hopefully play my part in being another complaining voice for change. I did figure out that using an iPad Pro with sidecar with my MBP 16" works just fine as it uses the intel graphics. Just something useful if someone absolutely needs to have a second monitor with their 16" and doesn't want it to act like an airplane!
Cheers!
Cheers!
Hi @Spartan23R,
This is really exciting result!
Could you please install iStat-Menus (free trial for 14 days) and post a screenshot like the following example. Please point your mouse to "Radeon High Side" line when you take the screenshot. It's one of the most important parameters contributing to extra heat (and fan noise) that the rest of us here are complaining about.
Thanks a lot.
## EXAMPLE SCREENSHOT
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Nice! any chance you could share some wattages for the GPU when you have it running with different loads and open vs clamshell mode?
thanks!