I'm waiting to see if they will revolutionise the cooling system of these laptops as I think they could be improved imo
I can't speak for Lenovo, but many of the computer makers chose not to revamp the cooling when they added Coffee Lake. Razer did that, using the vapor chamber, and even then the fans still needed to have some aggressive fan usage. The issue as I see it, as that these laptops are in a thinner enclosure (I blame apple), and yet these CPU and GPUs are generating much more heat then the prior generations.
Speaking for Lenovo, since they just came out with the the X1E, they will not be making any manufacturing changes, and from what I've read (but not used), the 1XE does have sufficient cooling. The fans are doing the job they were intended to do, some people may not like the noise.
I have the base model MBP and I admittedly don't push the CPU, so for my tasks its whisper quiet, but on occasion when I have pushed the CPU the fan noise is quite noticeable.
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As I mentioned before, they asked me for my feedback on their "1st generation" product.
The issue is not that Lenovo implemented an inferior cooling solution, but rather the use of the Coffee Lake processors and the Nvidia GTX 1050 Ti. If you look at all similarly equipped laptops you will find that all of them run rather toasty and all have issues with heat to some degree - even the Razer got rather hot under load. You cannot get away with a 6 core processor and a potent GPU and not have fan noise.
If you want a powerful laptop, you have to deal with fan noise. Just as @ stated, that occurs with the MBP. I would bet that even if you equip the X1E with the base processor i5-8400H, you will have fan noise. Its not a cooler running process, its TDP is 45w, you have two less processors but you also have the same GPU, so the fans will still need to ramp up
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One thing I think is crazy with the MBP is that if it restarts and you don’t log in, the temp will just keep ramping up. I guess it has the same issue with pre-login that it does in BootCamp?
For some reason, at boot up there's something that starts up and goes that really pushes the temps. I guess that process doesn't terminate until you log in ¯\_(ツ)_/¯