21 ms·
> Note that high temperature on the right side appears to be ignored by the OS. Plugging everything into the two right ports instead of the left raised the Righ
by julianlam 7y ago
> Note that high temperature on the right side appears to be ignored by the OS. Plugging everything into the two right ports instead of the left raised the Right temperatures to over 100 degrees, without the fans coming on. No kernel_task either, but the machine becomes unusable from something throttling.
I feel like the top answer is missing the forest for the trees. If the temperature of the chassis rises past 100 degrees because a peripheral was plugged in, and degrades performance if all of the peripheral ports are in use... that's not a usable computer.
Edit: Ah, 100F is 37C, so that's not so bad.
- jdsully 7y agoWhat part would thermal throttle at 37C? It can’t be fahrenheit.
- atonse 7y agoNo it's got to be C. 100F is at most, luke warm.
- rdiddly 7y ago100ºC is boiling though. You would probably smell solder rosin! Edit: Well TIL there is an awful lot of heat to get rid of.
- trollied 7y agoBoiling for water. Don’t think your motherboard is made out of that :)
- dr-detroit 7y agoif your computer is getting hotter than the surface of our earth's sun and you're not a gamer thats a major red flag
- gruez 7y agoThat's not too high, considering CPU start to throttle at approx 95C, and MOFSETs can go up to 115C
- klodolph 7y agoMOSFETs can go way, way higher than that. There are CPUs (well, microcontrollers) that go way higher than that. https://www.digikey.com/catalog/en/partgroup/ht83c51/40264 https://www.digikey.com/catalog/en/partgroup/ht83c51/40264 > Specified Over -55 to 225°C > Typically, parts will operate up to 300°C for a year, with derated performance. Whether 100°C is fine for a CPU is a question for the individual CPU.
- thr0w__4w4y 7y agoThank you. I used to design microprocessors (a LONG time ago) and TIL that there are CPUs that can operate at 225°C. Wow. And even limping along at 300°C? Wow wow. BTW, I can't stand the 8051 architecture, but that's really off topic. I guess if you need 225, you need that chip. Reminds me of the Henry Ford / Model T quote...
- klodolph 7y ago8051 can certainly service interrupts quickly and predictably, which is probably all you want if you are sticking a microcontroller inside a turbine engine or oil drill.
- emilfihlman 7y ago>and MOFSETs can go up to 115C Mosfets have a maximum junction temperature of about 175C
- klodolph 7y agoDepends on the MOSFET, of course. Some MOSFETS will run up to 300°C, according to the manufacturers. https://www.digikey.com/product-detail/en/HTNFET-T/342-1091-ND/2046727 https://www.digikey.com/product-detail/en/HTNFET-T/342-1091-... Used in e.g. turbine engines, instrumentation in oil wells or mining operations, and industrial process control. You can get microcontrollers that work in similar temperature ranges, “in any architecture as long as it’s an 8051”.
- jandrese 7y agoLots of people run video cards up to 95C. Maybe not something I want sitting on my lap though.
- sudosysgen 7y agoMy R9 290X stock would run up to 96C.
- catblast 7y agoI've run CPUs at 100 C. It's not like they melt at that temperature or something.
- aksss 7y ago100C is where intel typically throttles down clock as a life saving measure. You can run at 100C, or higher, but modern CPUs will cut down performance in an attempt to lower temp. High temp = shorter life. Macbooks adjusted that limit upwards so the CPU has a higher threshold before the auto-throttle kicks in. More about that here: https://www.youtube.com/watch?v=947op8yKJRY https://www.youtube.com/watch?v=947op8yKJRY
- LeifCarrotson 7y agoSome low-temp solders melt as low as 140C, but typical SAC lead-free solders you'll find in laptop motherboards melt at 220C. Many laptops are fine if a processor core hits 100C. I've got an old Thinkpad with an i7-3920mx that regularly runs at 95C when running a few VMs and is certified by Intel up to 105C. And yes, I've tried replacing the thermal paste and increasing fan speeds to try to keep temperatures down, because not all processors are successful there, but it has been running like that with no issues for years.
- deleted 7y ago[deleted]
- IntelMiner 7y agoA long time ago (roughly 2012?) I owned a Macbook Pro for a brief time I was running Windows 7 in Bootcamp and I wanted to set up Gentoo Linux in a virtual machine for some Linux work I needed to do I left the machine on my desk to compile a kernel. Basic wooden desk, nothing underneath or around it. No problems there Roughly 5 minutes later, the system had reached what Speccy reported to be a scorching 117 degrees celsius! (242.6F) I immediately shut it down and left it to cool off, then asked around on an IRC full of various flavours of IT people (programmers etc) The horrifying answers I got were that this was INTENTIONAL and that "the system acts as a giant heat sink" which is why it didn't power off after crossing a threshold As far as I understand it, running it under Bootcamp also disabled any kind of thermal throttling and forced the more power hungry "Radeon" graphics chip to be used, further adding to the problem
- chillacy 7y agoI remember those macbooks got so hot that it was physically painful to touch the metal under the screen near the magsafe charging port. That was fun.
- geerlingguy 7y agoI have forever been leery of hitting the F4-F8 buttons because of the 2007 Core 2 Duo model. I used it for a couple years and remember at least 3-4 times when I decided to rest a finger up there and ended up getting scorched.
- unicornfinder 7y agoYup I remember this. The area above the F keys would downright burn.
- StavrosK 7y agoWell, it was 117 C. If you spilled water on it, it would boil. Hell, boiling water would cool the machine.
- 7y ago
- shwoopdiwoop 7y agoIt's gotta be 100°C. The top cover part between the touch bar and the screen regularly runs so hot that touching it really hurts. Can't leave my hand on there for more than a second or two. Ran all sorts of diagnostics and according to those everything is fine.(MBP 2017)
- FeepingCreature 7y agoI mean, this is in a sense a known issue: https://www.penny-arcade.com/comic/2009/01/30/the-new-hotness https://www.penny-arcade.com/comic/2009/01/30/the-new-hotnes... Note that was back in 2009. Macbook thermals: not good.
- swdunlop 7y agoGoes further back than that. I used to refer to the Powerbook G4 as a liquid cooled laptop -- where the liquid was the user's circulation.
- DonHopkins 7y agoAt a certain point, Apple had to stop calling them "laptops" and start calling them "notebooks" because people kept putting them in their laps and frying their genitals.
- StavrosK 7y agoIt's definitely C, look at the other temperatures. It starts at 25ish C, room temperature.
- bluedino 7y agoLet's remember that even though the CPU in a current model MacBook Pro might reach 100 degrees C, the laptop itself is only going to hit about 50 degrees. Which is still pretty hot.