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hajime

macrumors 604
Original poster
Jul 23, 2007
7,812
1,244
Hello, before and when laptops (including the MBP) just became available, we all longed for one with 8th gen CPU with more cores and possibly better battery life. However, we now know that unless we go for laptops of over 2kg, we experience heat and other thermal issues. Battery life for some laptops with 8th gen CPUs also do not seem to be impressive. So, I wonder if it is a blessing or a curse. I wonder if I should even choose laptops that has 7th gen CPUs.
 

maflynn

macrumors Haswell
May 3, 2009
73,575
43,562
we experience heat and other thermal issues. Battery life for some laptops with 8th gen CPUs also do not seem to be impressive.
We experience? I can say that I'm not experiencing heat, or other thermal issues. Battery life if phenomenal and performance is through the roof.

So, I wonder if it is a blessing or a curse.
Neither, they are a tool to accomplish work. The MBP will either fit your needs or it won't. If it doesn't, then find another laptop (or desktop) that does.

I wonder if I should even choose laptops that has 7th gen CPUs.
I'm pretty sure you'll not be choosing any laptop in the near future. You seem stuck in analysis paralysis. All I can say buy a laptop and enjoy the machine. Nothing is perfect, so don't sweat the small stuff. For instance, if you bought a 2018 MBP when they were announced, you'll be enjoying it right now, instead of wondering what to do.

Good luck
 

hajime

macrumors 604
Original poster
Jul 23, 2007
7,812
1,244
We experience? I can say that I'm not experiencing heat, or other thermal issues. Battery life if phenomenal and performance is through the roof.


Neither, they are a tool to accomplish work. The MBP will either fit your needs or it won't. If it doesn't, then find another laptop (or desktop) that does.


I'm pretty sure you'll not be choosing any laptop in the near future. You seem stuck in analysis paralysis. All I can say buy a laptop and enjoy the machine. Nothing is perfect, so don't sweat the small stuff. For instance, if you bought a 2018 MBP when they were announced, you'll be enjoying it right now, instead of wondering what to do.

Good luck


Thanks. I will try Thinkpad first and if it does not work out, go back to MBP.
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
Everything is a trade off. Work out what you want to prioritise, and thus work out a conclusion.

And no, 8th gen CPU is not a curse. TDP stayed the same and we got pretty damn good performance bump.
 
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DavidDoyle

macrumors member
Dec 11, 2013
76
104
Everything is a trade off. Work out what you want to prioritise, and thus work out a conclusion.

And no, 8th gen CPU is not a curse. TDP stayed the same and we got pretty damn good performance bump.

I would have to echo this. Using a 2018 2.9 i9 with Handbrake - runs at 87-90% CPU utilisation at a constant 3.2 Ghz and around 96 degrees. I've not run it harder but Handbrake is great at using the additional cores. I don't see any problem with this and the 2 additional cores of the 8th gen are being put to good use.
 

hajime

macrumors 604
Original poster
Jul 23, 2007
7,812
1,244
I would have to echo this. Using a 2018 2.9 i9 with Handbrake - runs at 87-90% CPU utilisation at a constant 3.2 Ghz and around 96 degrees. I've not run it harder but Handbrake is great at using the additional cores. I don't see any problem with this and the 2 additional cores of the 8th gen are being put to good use.

Thanks for sharing. Does the fan get noisy? How hot is the laptop when doing it?
 

DavidDoyle

macrumors member
Dec 11, 2013
76
104
Thanks for sharing. Does the fan get noisy? How hot is the laptop when doing it?

The fans spin up and are audible of course, but they're not intrusive. I will likely have a look at Macs Fans Control and see if I can get the RPM's off. The laptop only gets hot around the top edge between Touch Bar and screen i.e. where the login board is. Keyboard and trackpad don't get warm.

I don't think I have a peculiar device here. I just don't get the whole "MacBook Pro thermals are terrible!" perspective, as mine doesn't seem bad at all.

Source is 1920P 50 fps HEVC MP4 file outputting to 720P 25 fps HEVC/X.265
 
Last edited:

DavidDoyle

macrumors member
Dec 11, 2013
76
104
Sustained2.jpg
 

hajime

macrumors 604
Original poster
Jul 23, 2007
7,812
1,244
The fans spin up and are audible of course, but they're not intrusive. I will likely have a look at Macs Fans Control and see if I can get the RPM's off. The laptop only gets hot around the top edge between Touch Bar and screen i.e. where the login board is. Keyboard and trackpad don't get warm.

I don't think I have a peculiar device here. I just don't get the whole "MacBook Pro thermals are terrible!" perspective, as mine doesn't seem bad at all.

Source is 1920P 50 fps HEVC MP4 file outputting to 720P 25 fps HEVC/X.265

Thanks. How about the heat level at the bottom? I use public transportation often (4 hours/day) so I care about the heat at the bottom of the laptop.
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
Thanks. How about the heat level at the bottom? I use public transportation often (4 hours/day) so I care about the heat at the bottom of the laptop.
You care about heat on laptop, or do you care about weight? Because I can guarantee something 3-4x the weight of MBP has better thermals and won't make your knees hot.

But your knees may get bothered by the weight.

Another angle: you NEED laptop, yet you're aware that a desktop rig with water cooling CANNOT be beaten in terms of thermals, on any laptop.

Everything is a trade-off.
 
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sjinsjca

macrumors 68020
Oct 30, 2008
2,238
555
I would have to echo this. Using a 2018 2.9 i9 with Handbrake - runs at 87-90% CPU utilisation at a constant 3.2 Ghz and around 96 degrees. I've not run it harder but Handbrake is great at using the additional cores. I don't see any problem with this and the 2 additional cores of the 8th gen are being put to good use.

Similar experience here with a new top-spec MBP. I use virtual machines frequently; they are core hogs and RAM-hungry. The new machine is significantly smoother and more responsive than the previous top-spec MBP. The user experience when being pounded is remarkably more refined.

All this nay-saying about thermal this and throttle that is not based on real power-user experience, that much is very clear.

As to Thinkpad vs. Mac, my only comment is that I came to my MBP from a Thinkpad. Those aren't what they once were, unfortunately.
 
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phrehdd

macrumors 601
Oct 25, 2008
4,321
1,314
Just throwing this out here - when you folks talk about non-Apple laptops, what is the criteria for the purchase. I see someone mention Lenevo and elsewhere someone might mention Asus or HP etc. What is the criteria you folks use?
 

cwanja

macrumors 6502a
Jun 23, 2010
742
436
Texas
Similar experience here with a new top-spec MBP. I use virtual machines frequently; they are core hogs and RAM-hungry. The new machine is significantly smoother and more responsive than the previous top-spec MBP. The user experience when being pounded is remarkably more refined.

All this nay-saying about thermal this and throttle that is not based on real power-user experience, that much is very clear.

As to Thinkpad vs. Mac, my only comment is that I came to my MBP from a Thinkpad. Those aren't what they once were, unfortunately.
This makes me happy to hear, as I am waiting for an iMac update to do just that. Obviously mileage might vary, but this is a bright star in a rather dull sky right now.
 

DavidDoyle

macrumors member
Dec 11, 2013
76
104
Thanks. How about the heat level at the bottom? I use public transportation often (4 hours/day) so I care about the heat at the bottom of the laptop.

Not sure what your use cases are, but in normal use it won't get hot. I tried the Handbrake test today on train and you can feel the heat coming out the back on your knees/lower thigh area. Noticeable but not uncomfortable. But that is quite extreme.
 

sjinsjca

macrumors 68020
Oct 30, 2008
2,238
555
Just throwing this out here - when you folks talk about non-Apple laptops, what is the criteria for the purchase. I see someone mention Lenevo and elsewhere someone might mention Asus or HP etc. What is the criteria you folks use?

Solidity, build quality, lack of factory-installed bloatware, reliability, keyboard and trackpad quality, and my own experience.

That last point has been very sore with HP, Dell and to a somewhat lesser extent Lenovo. I would never, ever buy another HP or Dell and would be reluctant to consider ThinkPad again, as they command a premium price without offering premium experience, reliability, service/support or longevity, anymore based on my last two examples.

I've had surprisingly good luck with an inexpensive Acer Swift 3. Nicely constructed, good keyboard, decent screen, passable trackpad (but nothing as good as a Mac's), excellent value. It came with not a lot of bloatware and what there is can be easily removed. If I had to purchase another PC laptop I'd go straight to Acer at the moment.
 

maflynn

macrumors Haswell
May 3, 2009
73,575
43,562
I will likely have a look at Macs Fans Control and see if I can get the RPM's off.
I would not recommend getting MAcs Fan Control to slow the fans down. The fan profile on the MAcs are fairly laid back in terms of how fast they spin up anyways. That is many other computer makers spin up their fans sooner and faster then the Macs. Slowing them down with temps already in the high 90s will only make the heat worse.

I would instead look at using the Volta app, you can under-volt and/or throttle the wattage. The downside, of course is performance but you may find a balance of good performance and heat.
 

DavidDoyle

macrumors member
Dec 11, 2013
76
104
I would not recommend getting MAcs Fan Control to slow the fans down. The fan profile on the MAcs are fairly laid back in terms of how fast they spin up anyways. That is many other computer makers spin up their fans sooner and faster then the Macs. Slowing them down with temps already in the high 90s will only make the heat worse.

I would instead look at using the Volta app, you can under-volt and/or throttle the wattage. The downside, of course is performance but you may find a balance of good performance and heat.

Ah apologies for the misunderstanding. I only installed Macs Fans Controls to be able to get the fan RPM's displayed in response to the OP's query. I agree in not fiddling with the standard fan behaviour.
 

hajime

macrumors 604
Original poster
Jul 23, 2007
7,812
1,244
Not sure what your use cases are, but in normal use it won't get hot. I tried the Handbrake test today on train and you can feel the heat coming out the back on your knees/lower thigh area. Noticeable but not uncomfortable. But that is quite extreme.

Go to hear that. I recall that few years ago, a man in the UK got his pen*s burnt due to his hot laptop.
 

maflynn

macrumors Haswell
May 3, 2009
73,575
43,562
Ah apologies for the misunderstanding. I only installed Macs Fans Controls to be able to get the fan RPM's displayed in response to the OP's query. I agree in not fiddling with the standard fan behaviour.
Don't get me wrong, I use that app myself. I set up a profile that makes them a bit more aggressive, i.e., spin up faster when the temps hit 60c and then go full bore at 80c.
 

Sedulous

macrumors 68030
Dec 10, 2002
2,530
2,577
It is great to get updated hardware. It would be nice if Apple had better engineering. I have a suspicion that these new models will have heat death issues like many of Apple’s 15” MBPs in the past... except now you can’t remove storage. But yeah, more cores is awesome!
 

magbarn

macrumors 68030
Oct 25, 2008
2,970
2,272
It is great to get updated hardware. It would be nice if Apple had better engineering. I have a suspicion that these new models will have heat death issues like many of Apple’s 15” MBPs in the past... except now you can’t remove storage. But yeah, more cores is awesome!
I think Intel is just as guilty here as these aren't really 45 watt chips...
This is similar to Intel's Emergency Edition Pentiums that they tried to use to counter AMD back in the day and they're now just repeating history. The 6 core chips do work, they're just not performing to their full potential in the MBP. Only a few gaming laptops in the 6+ lbs. range are able to do that. True high performance 6 core laptop CPU's that would work in a thin chassis are still a couple of years away in the 10nm or smaller process...
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
I think Intel is just as guilty here as these aren't really 45 watt chips...
This is similar to Intel's Emergency Edition Pentiums that they tried to use to counter AMD back in the day and they're now just repeating history. The 6 core chips do work, they're just not performing to their full potential in the MBP. Only a few gaming laptops in the 6+ lbs. range are able to do that. True high performance 6 core laptop CPU's that would work in a thin chassis are still a couple of years away in the 10nm or smaller process...
I think you're mistaken. Previously, the CPUs were 35W. MBPs struggled with that too.

The i9 part is 45W officially, but it can be set to 35W by the vendor. Since Apple doesn't tell us what they use exactly, we can't even be certain they are rolling at 35W.

A bump from 35 to 45W makes a 28% on an already struggling chassis.


What does "8th gen" mean?
8th generation Intel i-series CPU
 
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