Mac mini 2018 - thermal solutions thread  

Page 3 / 4 Prev Next
  RSS

waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 14, 2018 7:27 am  

Interesting thing, because my ram power is about 3 Watts in idle and about 4,5 W in full load. Mine goes  
not above 3,1ghz in full load and max power is about 55W 😕  What Ram you have installed? Mine is Crucial CT16G4SFD8266

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 14, 2018 7:31 am  
Posted by: James
Posted by: bluetech

The i7-8700B on the Mac mini 2018 runs at 95,4% ✔️

I've done this to test the cpu:
-4 hours of prime95, 12Threads, 8k for max heat
-than Cinebench 15 -> 1211 pts    result "cold"->1269 pts

So you saying it reduces speed by 4.6% when its at max temp?

yes, at 100% Multicore Load ....like video-rendering this is the Power you get

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 14, 2018 8:28 am  
Posted by: waterchill

Interesting thing, because my ram power is about 3 Watts in idle and about 4,5 W in full load. Mine goes  
not above 3,1ghz in full load and max power is about 55W 😕  What Ram you have installed? Mine is Crucial CT16G4SFD8266

I have the same Ram:

Oh no, i think with the update to 10.14.2 Apple changed something, 
because my tool to edit the fan/temperature-curve was gone. 

One of the important changes for me was:
- if the Cpu goes over 70 degrees (happens only high at multicore-load)
than push the fan to 100% ->4.400 rpm

I don't hear the mini, with this small changes, 
the fan curve was only a little bit steeper.

Now the tool is gone, but i know that there is no
thermal problem, and it's the mini is very quiet. ❤️

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 14, 2018 8:29 am  

How much do the ram in "power" on full load?

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 14, 2018 8:42 am  

You are searching for the 20w between 55w and 75w?
Maybe this is the result of my fan-curve-change so that 
the cpu runs 200Mhz higher.

I have to test it today with the update to 10.14.2
and without fan-curve-changes.

Throttleing under 3.1Ghz is possible, because 8k is 
"the max heat test" 😊.

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 14, 2018 8:43 am  

ok thanks

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 15, 2018 1:13 pm  

Today I sticked with Liquid metal "Conductonaut". Now it goes very well. 

We have about 0°C outside here, so it put the mini outside and went over VNC to control it. I pushed the fans to the max with "Macs Fan Control". So it will not go over 3,5ghz even if the temps are 10-15°C lower. 3,6ghz has been seen for 2-3 seconds but thats it. But look at the pictures.

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


theitsage, bluetech, Sebastian and 1 people liked
ReplyQuote
jangoloti
(@jangoloti)
Trusted Member
Joined: 2 months ago
Posts: 63
December 15, 2018 1:34 pm  

I do not understand. The screenshots are before and after?

Mac Mini 2012 i7, Mac book Pro 2016 15" with TB, eGPU Galax/KFA2


ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 15, 2018 1:36 pm  

The screenshots are after. Before I had max 3,0 - 3,1ghz

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 15, 2018 4:47 pm  
Posted by: waterchill

Today I sticked with Liquid metal "Conductonaut". Now it goes very well. 

We have about 0°C outside here, so it put the mini outside and went over VNC to control it. I pushed the fans to the max with "Macs Fan Control". So it will not go over 3,5ghz even if the temps are 10-15°C lower. 3,6ghz has been seen for 2-3 seconds but thats it. But look at the pictures.

Quite an improvement.  It looks like that's the best stuff.  It also looks like there is nothing nearby the CPU die that, might, get damaged by conductance. Does the liquid metal run easily? Is the heat sink base solid copper?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


bluetech liked
ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 15, 2018 5:33 pm  

The heat sink is not solid copper but the inner core is copper. Appliance of this liquid is easy. Like normal paste.

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


bluetech and hornedfrog liked
ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 15, 2018 5:54 pm  
Posted by: waterchill

The heat sink is not solid copper but the inner core is copper. Appliance of this liquid is easy. Like normal paste.

Thank you.  Does the liquid flow or run out easily after installation?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
waterchill
(@waterchill)
Active Member
Joined: 1 month ago
Posts: 17
December 15, 2018 6:13 pm  

The paste is half solid half fluid. There are q tips included to apply this fluid on the surface.

MacPro 6,1 12C/64GB/1TB 2xD500
MacMini 2018/i7/1TB/32GB eGPU Vega64/Sonnet650


bluetech and hornedfrog liked
ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 15, 2018 6:26 pm  

@waterchill.  Thank you for the updates. Are the benchmarks faster?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
(@megaseppl)
Active Member
Joined: 1 month ago
Posts: 8
December 16, 2018 10:20 am  

Hi,

if anybody is interested in a WiFi based PWM fan controller for a cooling solution like my Glory Blow Hole: I have written a little terminal application for MacOS in ObjC and Swift that can run in background and submit the CPU temperature to the WiFi PWM controller.  The controller itself adjusts the speed of the 5V Noctua PWM fan runs on a cheap ESP8266 for which I have written a little firmware in C.
In my case the communication goes through my Home automation software (Mac mini -> Home automation -> PWM controller on ESP), but the program and the firmware can be easily rewritten to work without the software in the middle (Mac mini -> PWM controller). 

Above: My Home automation software with Kenobi (my Mac mini) and the Glory Blow Hole. The Temperature of the CPU sets the speed of the fan.

You would need Arduino IDE for programming the ESP, XCode for compiling the Mac program, the Noctua fan, an ESP8266 (with NodeMCU if you want a little less work), some cables (some 1 wire cables, 1 old USB cable and Micro USB)m WiFi and a little soldering skill. 
Because it would need a little time for me to change the software to make it work without my home automation just comment here if you're interested. Then I would create an independent version of both.

No eGPU yet... planning to buy a Razer Core X with ASUS Vega 64 for my Mac mini


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 16, 2018 5:04 pm  
Posted by: waterchill

How much do the ram in "power" on full load?

Only 1,24w at load and 0,94w idleing.

That is 8k at 12workers after starting,
4 hours full load and the cpu boost pushes to 3,2Ghz.

3.6GHz at the Mini: ❤️ at8k Prime

that is 400Mhz more turbo than with stock thermal paste 😍
and a bit more watts for free 😇

Time for benchmarking the tweaked mini:
geekbench 4   &   cinebench 15   please

Under 10 Degrees is out of the Specs 😂

but: i like this crazy fun ....that is my first mac
and i don't want to lose the Warrenty 😇 

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


theitsage and hornedfrog liked
ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 16, 2018 5:14 pm  
Posted by: Sebastian

Hi,

if anybody is interested in a WiFi based PWM fan controller for a cooling solution like my Glory Blow Hole: I have written a little terminal application for MacOS in ObjC and Swift that can run in background and submit the CPU temperature to the WiFi PWM controller.  The controller itself adjusts the speed of the 5V Noctua PWM fan runs on a cheap ESP8266 for which I have written a little firmware in C.
In my case the communication goes through my Home automation software (Mac mini -> Home automation -> PWM controller on ESP), but the program and the firmware can be easily rewritten to work without the software in the middle (Mac mini -> PWM controller). 

Above: My Home automation software with Kenobi (my Mac mini) and the Glory Blow Hole. The Temperature of the CPU sets the speed of the fan.

You would need Arduino IDE for programming the ESP, XCode for compiling the Mac program, the Noctua fan, an ESP8266 (with NodeMCU if you want a little less work), some cables (some 1 wire cables, 1 old USB cable and Micro USB)m WiFi and a little soldering skill. 
Because it would need a little time for me to change the software to make it work without my home automation just comment here if you're interested. Then I would create an independent version of both.

Thank you. Yes!

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 17, 2018 7:16 am  
Posted by: waterchill

Today I sticked with Liquid metal "Conductonaut". Now it goes very well.

We have about 0°C outside here, so it put the mini outside and went over VNC to control it. I pushed the fans to the max with "Macs Fan Control". So it will not go over 3,5ghz even if the temps are 10-15°C lower. 3,6ghz has been seen for 2-3 seconds but thats it. But look at the pictures.

Liquid metal: I never test this, i ever use "budget-thermal-paste"
Artic Cooling MX-2, only 15€ for 30Gramms incl. shipping. (not 8€/ 1 gr.)
But in 2 or 3 Years....i think i have to test this liquid metal at the mini.

Just for fun: 
I think we have to wait for colder temperatures here in Germany.
I got my mini at the 8.November, because of knowing how cpus
in small cases can throttle, and to check this at the mini:

I put him in the fridge, at allowed 10 degrees Celsius. 
I don't get more cpu-performance with my stock setup,
and the up to 5% throttleing for me are okay.

But i thougt:
What about a freezer with -18 degrees?  
Not for Prime95 at 8k, only to look what scores are possible
at  geekbench 4   and  Cinebench  R15  😇 ?
Is Apple logging to low temperatures like this?
F........ Warrenty 😂 😜

In two or three years i do this! 
->To cose Apple Care is still possible for me.

Fan-Tool: I use the same like you,
my settings are: 

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
jangoloti
(@jangoloti)
Trusted Member
Joined: 2 months ago
Posts: 63
December 17, 2018 8:38 am  
Posted by: waterchill

This is what I always first do with my new macs over the last years. If you do this you will maybe hear a noisy fan. It is always the same story...

What compound do you use? Do the surfaces get corroded with time?

Mac Mini 2012 i7, Mac book Pro 2016 15" with TB, eGPU Galax/KFA2


hornedfrog liked
ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 17, 2018 9:14 am  

btw/of topic : the flash at the mini2018! is:  

"stupid fast!" 😎
 
i am happy that i don't chose 256gb,
that would be to small for me.

I use 400gb for mac, 100 for Bootcamp and
use both OS with Parallels Desktop. (VM)

@all mini 2018-user:
How you use the "limited" internal space?

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
(@megaseppl)
Active Member
Joined: 1 month ago
Posts: 8
December 17, 2018 1:36 pm  
Posted by: hornedfrog

Thank you. Yes!

Here's the link to the project files: GloryBlowHole.zip

You'll need an old USB cable, some 1 wire Dupont cables, an ESP 8266 with 5V input and of course the 5V PWM fan. 
You can see the exact names of the hardware I use below:


This is the test setup. If everything works you can solder everything together and put it in a small case.

In the zip file you'll find: 
- The Arduino IDE code file for the ESP. You have to edit the variables like WiFi SSID/password, IP etc. and upload it to your ESP. 
- The XCode project for the Command Line application. You have to edit the target IP address of the ESP in main.swift. Currently it measures Core 1 temp. But you have several other sensors you could use instead (change SMC_KEY_CPU_TEMP in smc.h). Compile after and place application file and the created directory to your Applications folder.
- The Launch Deamon .plist to start the application on system start up: Edit the path/name to your command line application if required and place it in /Library/LaunchDeamons

The source code is not beautiful (I just wanted it to get it working as fast as possible)... and may contain bugs. The source is completely open, so feel free to improve it. 🙂
Wrong PWM parameters could possibly damage the fan. Use it at your own risk. (I have tested the Noctua fan only! Other PWM fans might have problems with turning them off by PWM)

After all is built together and set up the Mac will measure its CPU temperature and upload it via HTTP GET to the PWM controller. By default it will only upload if the temperature changed by 5°C or if last upload time is more than 30 seconds ago. 
The fan will go off if it does not get an updated value for more than 70 seconds.

I would recommend a USB AC/DC with >= 2A.

No eGPU yet... planning to buy a Razer Core X with ASUS Vega 64 for my Mac mini


ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 17, 2018 1:39 pm  

@Sebastian  Thank you.

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 17, 2018 2:50 pm  

@Sebastian: Vielen Dank!

Glory Hole Blow: That's cool 😜

Your smarthome-screenshot looks nice,
more functions than stock homematic iP.

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


Sebastian liked
ReplyQuote
(@megaseppl)
Active Member
Joined: 1 month ago
Posts: 8
December 17, 2018 4:39 pm  
Posted by: bluetech

Your smarthome-screenshot looks nice,
more functions than stock homematic iP.

Thanks! 
I had to program my own home automation. At the time I began with it there was simply no good solution that supported, integrated and connected all my devices (like Homematic, Philips Hue, Yamaha MusicCast, Pioneer, Samsung TVs, Windows, Mac, iOS, Android, Synology, AVM, EdgeMax, UniFi, SNMP, WoL, Apple Workflow (and Siri), Speech Output with Airplay, own ESP based hardware) and has features like Person tracking (so that for example the lights follows you - or person dependent actions like "If that special person is in that room, do this" / "If these two persons are in the sleeping room together, do that") etc...
Was a bit of work, but runs very well since some years and it's the perfect project to learn to understand how stuff works.

No eGPU yet... planning to buy a Razer Core X with ASUS Vega 64 for my Mac mini


bluetech and theitsage liked
ReplyQuote
bluetech
(@bluetech)
Eminent Member
Joined: 3 months ago
Posts: 26
December 18, 2018 7:31 am  
Posted by: Sebastian
Posted by: bluetech

Your smarthome-screenshot looks nice,
more functions than stock homematic iP.

Thanks! 
I had to program my own home automation. At the time I began with it there was simply no good solution that supported, integrated and connected all my devices (like Homematic, Philips Hue, Yamaha MusicCast, Pioneer, Samsung TVs, Windows, Mac, iOS, Android, Synology, AVM, EdgeMax, UniFi, SNMP, WoL, Apple Workflow (and Siri), Speech Output with Airplay, own ESP based hardware) and has features like Person tracking (so that for example the lights follows you - or person dependent actions like "If that special person is in that room, do this" / "If these two persons are in the sleeping room together, do that") etc...
Was a bit of work, but runs very well since some years and it's the perfect project to learn to understand how stuff works.

All incl. smart home: That's awesome! 😍

In the future this is a project 4 me, too.

Only one name i missed in your list,
because i orderd my first "siri" dot.

HexaMacMini/32Gb/512gb/10Gbit/s
...is waiting for [email protected]


ReplyQuote
dufreyne
(@dufreyne)
New Member
Joined: 1 month ago
Posts: 3
December 19, 2018 12:22 pm  

I've got an i7 model for software development and I find the fan quite noisy when it concerns some CPU related tasks. The fan starts spinning from 1700 (min) to 4400 RPM (max) in a couple seconds. My solution is very simple: turning off turbo boost will lock your CPU frequency at 3.2 Ghz on all cores and make this little rig just silent. 
I know that gives you slower performance, but come on, are the many people who needs those hours of video encoding/decoding? I'm not one of those. With a single mouse click I enable turbo boost back when I need to. What you can also do is undervolting the CPU, it should make the T even a little lower without sacrificing performance in this case (I undervolt 50mv and disable turbo boost with the Volta app).

FYI GeekBench stats:
With TurboBoost - 5700/23062
Without TurboBoost - 4337/19366

PS. Just noticed funny thing, my Windows 2011-3 Workstation (2014) with 5820k 6 Core i7 gets only 3485/20355 in GeekBench (no overclocking).

Macmini 2018 Core i7 32GB RAM


cgWerks and Sebastian liked
ReplyQuote
wimpzilla
(@wimpzilla)
Reputable Member
Joined: 2 years ago
Posts: 421
December 20, 2018 11:34 am  

@Sebastian

Thanks you for sharing such a wonderful implementation!

2012 13-inch Dell Latitude E6320 + R9 [email protected] (EXP GDC 8.4) + Win10
E=Mc²


Sebastian liked
ReplyQuote
theitsage
(@itsage)
Famed Member Admin
Joined: 2 years ago
Posts: 3401
December 21, 2018 1:45 am  

I ran Prime95 for nearly 5 hours today on the 2018 Mac mini i3. Everything is stock in terms of the cooling system.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 21, 2018 2:17 am  
Posted by: theitsage

I ran Prime95 for nearly 5 hours today on the 2018 Mac mini i3. Everything is stock in terms of the cooling system.

Great, how new is your machine?  Have they fixed the paste?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
theitsage
(@itsage)
Famed Member Admin
Joined: 2 years ago
Posts: 3401
December 21, 2018 2:48 am  

@hornedfrog The cooling system is the same for all 2018 Mac mini. I was curious so I picked up the i3 base configuration. It definitely runs less hot compared to the i5 and i7.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 21, 2018 3:25 am  
Posted by: theitsage

@hornedfrog The cooling system is the same for all 2018 Mac mini. I was curious so I picked up the i3 base configuration. It definitely runs less hot compared to the i5 and i7.

Thanks. That makes sense.   You picked it up today ?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
theitsage
(@itsage)
Famed Member Admin
Joined: 2 years ago
Posts: 3401
December 21, 2018 3:57 am  

I got it two weeks ago. The serial number showed production week 40 which is the first week of October.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


hornedfrog liked
ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 21, 2018 4:07 am  
Posted by: theitsage

I got it two weeks ago. The serial number showed production week 40 which is the first week of October.

Thank you.  How does one find the production week?

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
theitsage
(@itsage)
Famed Member Admin
Joined: 2 years ago
Posts: 3401
December 21, 2018 4:51 pm  

I've been using this website for the past 15 years and it's great to find production week. http://www.chipmunk.nl/klantenservice/applemodel.html

Best ultrabooks for eGPU use

eGPU enclosure buying guide

94 external GPU build guides


hornedfrog liked
ReplyQuote
hornedfrog
(@hornedfrog)
Eminent Member
Joined: 2 months ago
Posts: 30
December 21, 2018 5:59 pm  

Thank you.

Mac mini 2018/i7/1TB/8G.
To add: Sonnet Breakaway Box 550W. MSI RX 570 8G (want to upgrade to Sapphire Vega 64 - 21275-03-20G card)
32G RAM


ReplyQuote
jangoloti
(@jangoloti)
Trusted Member
Joined: 2 months ago
Posts: 63
December 22, 2018 11:00 am  
Posted by: waterchill

This is what I always first do with my new macs over the last years. If you do this you will maybe hear a noisy fan. It is always the same story...

It does affect the validity of the warranty, right?

Mac Mini 2012 i7, Mac book Pro 2016 15" with TB, eGPU Galax/KFA2


ReplyQuote
Page 3 / 4 Prev Next