Live data from Hacker News

MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

macrumors.com

251–260 of 413 posts

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#251

Earlier quoted context omitted.

In fairness, Lee criticized the Dell XPS 15's thermals in a video a couple of days ago. Of course, he also posted a video last week about how he was starting to hate Apple products. If you watch a lot of his videos, you'll notice that he almost always talks about thermals, so it's not surprising to see him focus on that aspect of the MBP.

I have had thermal issues both in my old Lenovo T61P and a more recent Macbook Pro 15, both with dedicated graphic cards. No replacing of soldering paste on my part was ever able to improve the situation, with the result of having powerful machines only on paper, that were brought to their knees even by light workloads. My Mac becomes impossibly hot and slows down playing games like Hearthstone and Civ5, FFS. I have…

> I have long decided that my next laptop (regardless of the brand) will have integrated graphics and a medium TDP CPU, and I will just limit heavy workloads and gaming to my desktop.

You get more bang for your bucks this way, too. Desktop hardware costs a fraction of a comparable laptop.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#252
post #181

Every MacBook Pro I've ever owned locked it self down to low frequency after running a CPU intensive task for a minute or so. I thought that was common knowledge? There's NO laptops out there that wouldn't do that (and NO mobile devices either). This is why desktop workstations are still so much faster even though they carry same frequency chips.

I've been doing hours-long CPU+GPU intensive tasks (compiling ghc, number crunching, playing games like Bioshock Infinite and StarCraft II on a HD4000) on a bunch of pre-retina MBP and rMBP 13" and they never throttled. Thermal design and management is spot on, fans stay silent most of the time and kick in only when load requires it.

Beware of anecdata. Given the stories I hear I would squarely put the various issues in the realm of thermal paste gone bad, busted fans, or clogged airducts, and certainly not on intrinsic bad design because I have personal counterexamples of dozens of various Apple laptops from 2008 to 2016 being perfectly fine out of the box.

Obviously though, a desktop will beat a laptop's thermal performance any day but I think this is missing the point.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#253

I keep seeing thermal issues come back to bite some of the smartest companies with products designed by the world's best engineers. Everything from batteries to laptops to phones is severely affected by heat, and improper thermal design can lead to some huge issues. For example, the biggest thing affecting battery life is thermal load. The biggest thing affecting the maximum sustained power of a laptop or phone is th…

some of it in Apple's case can be ascribed to their quest for reducing the thickness of the laptops to the point we lost not only ports it may be affecting their ability to adequately cool them

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#254

Earlier quoted context omitted.

I was thinking about getting an XPS 15 soon so this gives me pause. > Dell charges just as much if not more than Apple Not even close. XPS 15 with 6 core, 16GB RAM, 256GB SSD is $1500. MBP is $2400 for the same specs. What I really like on the XPS 15 is the 97 WHR battery. I haven't seen any other notebook with this capacity.

Yes, I mean obviously right now the brand new MBP is absurdly expensive. But when I got the XPS 13 it was actually more expensive than an equivalent MacBook Air(with the caveat that the XPS had a higher resolution screen).

MacBook Air is not comparable to an XPS...

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#255

Earlier quoted context omitted.

In fairness, Lee criticized the Dell XPS 15's thermals in a video a couple of days ago. Of course, he also posted a video last week about how he was starting to hate Apple products. If you watch a lot of his videos, you'll notice that he almost always talks about thermals, so it's not surprising to see him focus on that aspect of the MBP.

In all fairness: If you sell a >3000€ laptop, people should expect to get the full value out of it. Maybe it's hard to cool CPUs in thin laptops. But then don't let people pay for expensive upgrades that have no performance benefit.

Seems like it's hard to cool GPUs in desktops too if you're Apple

>their maximum FP32 compute performance is 11 TFLOPS (which points to around 1340 MHz clock-rate for the Vega 64) and their peak memory bandwidth is 400 GB/s (indicating about 1600 MT/s memory speed), which is slower when compared to the Radeon RX Vega cards for desktops. The main reasons why Apple downlocks its GPUs are of course power consumption and heat dissipation https://www.anandtech.com/show/12152/apple-starts-imac-pro-s...

Sad to see that this is becoming a recurring theme from Apple's pro line.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#256
post #19

Dave Lee's youtube video is a withering takedown, presented dispassionately. His argument is such a slam dunk that the article concludes with stunned disbelief, speculating that maybe there's "something wrong with the MacBook Pro with Core i9 chip that Lee received". Yes there's something wrong with it, that was the exact point of his video. Do people really think he just got a lemon?

It's impossible he had a faulty model?

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#257

Earlier quoted context omitted.

That doesn't strike me as particularly noteworthy/unexpected.

You don’t think it’s unreasonable that a laptop should work in daylight?

As a mechanical engineer, no. It’s basic heat transfer physics. You can’t throw money at the laws of thermodynamics and expect a physics bending solution.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#258
post #206

Earlier quoted context omitted.

When working as intern at an Apple store more than 10 years back the instructions from Apple for reassembly would always tell to put a huge amount of thermal grease on the CPU. So much that it would be squirted out from under the heatblock in large blobs. I always found it odd as I was used to add just as much as was needed without spilling over. Never read any research on it though so I'm curious what was the right…

If a bare-die CPU or GPU is not fully covered, the uncovered portions will rapidly become hot and the chip may die (especially if the thermal sensors are covered and cannot detect this). This is different from modern desktop processors where there is an IHS to help spread the heat around - there is a very real danger to insufficient paste application on a bare die. In contrast, since modern thermal pastes are non-con…

> if the thermal sensors are covered and cannot detect this

Modern chips seem to have sensors specifically detecting hotspots. E.g. with an AMD Polaris GPU, you can see "Hotspot Temperature" in HWiNFO.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#259
post #19

Dave Lee's youtube video is a withering takedown, presented dispassionately. His argument is such a slam dunk that the article concludes with stunned disbelief, speculating that maybe there's "something wrong with the MacBook Pro with Core i9 chip that Lee received". Yes there's something wrong with it, that was the exact point of his video. Do people really think he just got a lemon?

Quinn Nelson (a.k.a. Snazzy Labs) recently did a couple of videos where he replaced the stock thermal paste on a 2017 MacBook Pro with a liquid metal thermal paste [1] and then 3 months later with a standard thermal paste [2]. With the liquid metal paste the CPU temps dropped 10°C, ran 200MHz faster and the MacBook Pro didn't thermal throttle. The standard thermal paste also saw a 7-10% improvement in thermals compar…

Apple can't make good keyboards anymore, are they even failing with their thermal paste now?

I really don't feel these machines are professional level.

Re: MacBook Pro with i9 chip is throttled due to thermal issues, claims YouTuber

#260
post #39

Earlier quoted context omitted.

To be fair they’ve always been bumping up against this since they don’t like to put tons of fans in their laptops. While this obviously shouldn’t happen, it seems like something you could easily predict might be a flaw if you knew that one had to exist.

They've always been bumping up against this back in the Apple II days, and systems would overheat then, too. All in the name of Steve Jobs emphasizing case aesthetics & not wanting fan noise.

Eh, that reminded me of the paper chimneys some people advocated for better air flow on the original Mac or MacPlus.

(e.g. https://www.google.com/search?q=mac+chimney , namely https://www.flickr.com/photos/idontlikewords/275104234 - some case aesthetics ;-)

Post reply on HN