I do have a 10bit display. LG OLED. I've tested a lot of settings to get to this point. It works. But yes, everyone should always test for themselves.
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2018 mini 3.2ghz I7 temps?
- Thread starter archer75
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It makes sense that it might prevent the encoder from making more harsh color gradients as it shrinks the filesize.
Have you applied the thermal paste? If so what type of paste are you using? And what performance gains are you seeing?
Not yet. I'll do it this weekend. I'm currently building my frames to hold the filter, fan and PWM controller for the table hole.
I have bought regular Arctic MX-2. Others have reported lower CPU temps of up to 10° with the mac mini.
Liquid metal (which would be better of course) is too risky imho and I'm not sure if it's compatible with the material of the cooler/heatspreader of the mac mini.
Meanwhile there will be millions of these working perfectly despite your concern.
The aluminum case is designed to dissipate heat, so it’s going to heat up relatively quickly. It’s a non issue.
Did you read the entirely message? That post was not about heat problems under heavy load, not even while idling. It was in sleep mode (for 10 hours straight)! Normally a Mac consumes nearly no energy in sleep mode that produces heat. My other Macs are almost invisible in sleep mode to the infrared cameras (maybe 1-2° difference to environment). But this Mac Mini was almost 25° degrees above the temperature of the room. That's even more than my passive cooled Gigabyte Brix based Home server at 50% CPU running for hours.
It must not actually have been asleep for some reason...maybe display was off but it was doing some background tasks?
This sounds like an elegant solution that Jony might have on a whiteboard in his lab at Apple HQ
. Seriously, this seems like an overboard solution to solve a problem that doesn't exist. The mini wouldn't have passed and received UL certs if the design submitted didn't provide sufficient cooling. That said, I haven't purchased a mini yet and appreciate all the reports early adopters are providing. D
I did it for the last 2 hours. Did about 40 measures (with about 100 seconds pauses between them) and found the two reasons of my sleep problems.
Both reasons have caused to let the Mac mini not completely sleep: Monitors went off, external disks stopped spinning, but other devices like mouse still had power. In this state the Mac mini was still consuming almost 20 Watt constantly. Because the fan was not running the Mac mini heated itself up.
1. Power Nap
With Power Nap the sleep mode does not really work. Always when it's turned on the Mac mini wakes up itself (Screens stay off, but Mouse und unknown other devices are running and keep running).
2. External USB-C hub
This caused the same problem as Power Nap. When changing the USB-C hub (with Webcam in it) to a USB 3 hub the problem was gone.
Here's a screenshot of my measures. You can see that the problem came up when I connected the USB-C hub (but stayed after I've unplugged it when Power Nap was enabled). The problem was gone when both the USB-C hub was disconnected and Power Nap was disabled. Now in sleep the mac mini consumes less than 7 watts.
So heat problem number 1 of 3 is gone. Next problems to solve: Heat in idle and on heavy CPU load. The hopefully working solutions for these problems I've described above.
[doublepost=1544047933][/doublepost]
What? Did you forget the heat problem with i9 Macbook Pros (and several other Macs in the past 15 years?)This sounds like an elegant solution that Jony might have on a whiteboard in his lab at Apple HQ
The problem with the current idle/normal work cooling at the Mac mini: The built in fan always spins at around 1700 rpm. Obviously to less to cool the Mac efficiently: Normal working tasks with watching a stream on one screen results in temperatures of more than 70°C after some hours (right now I have 60°C). That's not a big problem because it will not throttle the CPU. BUT: If you really need the CPU power, the cooler and the case can't absorb enough heat energy anymore. So the CPU heats up to 100° in a few minutes and starts throttling. If I keep the case constantly cooler it will absorb far longer before the heat can't get transferred no more to the case and the air. It works like a cache or buffer. Beside that the internal fan will always have cool air from below so it will be more efficient.
You can easily test it: Boot a cold Mac mini that was shut down for a long time: I can render in applications like Cinema 4D on all cores for about 20 minutes before the CPU gets throttled. If the mac mini is already warm (only from regular worklng without heavy CPU load) it starts throttling in 1-5 minutes.
Beside that: It's fun to build solutions that improve a computer.
And my fan hole will be beautiful, white sprayed, with round corners (even though it's invisible). I will call it the glory hole.
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Update: Now the Mac mini has ~30°C with working sleep mode. 7° more than the environment. Much better compared to the 25° difference I had before:
[doublepost=1544117242][/doublepost]And here's the first preview of my glory blow hole:
On the right side you can see the current PWM controller. With the Poti it's easy to set a speed which you can't hear.
All USB powered.
[doublepost=1544117242][/doublepost]And here's the first preview of my glory blow hole:
On the right side you can see the current PWM controller. With the Poti it's easy to set a speed which you can't hear.
All USB powered.
I realise that you think that this is an improvement, but is it normal for a mini, in sleep mode in a 23℃/73℉ room, to be 30℃/86℉? I've got mine on the sill of an open window, and it's winter here, but I'm pretty sure that mine wasn't anywhere near 7℃/13℉ above ambient when it was in a closed room.
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It was 46°C before (room had 21°), now it's 30° (room has 23°). Of course this is a huge improvement.
Of course that does not mean that every other Mac mini user has the same problem with Power Nap or USB-C Hubs.
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Yes, but as I understand it you are now getting, in sleep mode, 7℃/13℉ above ambient without the Power Nap and USB-C hub problems. Maybe that's normal, but if so it surprises me.
if I didn't have 3 screens on the Mac mini, an external SSD and an external HDD, it would be less than 3 watts total instead of ~6,9W that it's consuming now and producing heat. But I can live with that even though I would prefer to shut the Mac off instead of using the sleep mode - but Wake On LAN does not work at my 10 Gbit model - which I need to enable remote access over VPN if the Mac is off.
That's weird all right. Sounds like an old time (1930-1960) mechanical adding machine.
Some have called it a coil whine, but its intermittence gives it a very mechanical sound.
Maybe some fan speed control kludgery?
Neat.Update: Now the Mac mini has ~30°C with working sleep mode. 7° more than the environment. Much better compared to the 25° difference I had before:
View attachment 808908
[doublepost=1544117242][/doublepost]And here's the first preview of my glory blow hole:
View attachment 808909
On the right side you can see the current PWM controller. With the Poti it's easy to set a speed which you can't hear.
All USB powered.
How effective would it be to stick heatsinks on it via thermal pads?
Heatsinks where?
The glory blow hole will be inside the table and push the air through the mac mini.
Or do you mean heatinks on the Mac mini? Even I would not do that! ;-)
of course on the mini! if its hot it radiates heat, with heat sinks it would do that faster
https://www.aliexpress.com/item/Coo...lgo_pvid=828a43f0-94b5-4a17-8ce8-639eb7ad266e
i'd say the only real cost is cosmetics
That's what I'm talking about!
Tomorrow I'll install my glory blow hole. After that I'll see if other improvements are still required.