For the past four years I was crunching with my notebook which has Nvidia GT740M which is a really slow card. The notebook worked well but, I let it get wet with some condensation on it, so it's motherboard is dead now. I can replace it but I don't want to invest a lot in this device until there are some really cheaper motherboards.
Now I'm planning to buy a gaming notebook. Not because I play a lot, but they usually have better cooling systems. Actually I was thinking about a desktop but I'm really mobile and need a mobile solution. So higher graphic options mean heavy notebooks and expensive.
I was thinking about a notebook with a mobile GTX 1050Ti GPU.However, for almost the same price I found a second hand Alieanware with GTX980M. I wonder how does mobile GPU's compare each other. I really want the 1050TI one as it will be much easier to ride bike for 60KM with a notebook in my backpack. But if the other it's much faster I can choose it maybe.
Does anyone have an idea or experience with these mobile cards? Yeah they can't compare to desktop systems but desktop is not a food option for me...

You would want the 1050ti for mobility as it has less TDP so less power consumption so they would need a smaller, lighter heat sync.

Exactly! I preferred GTX1050Ti Mobile and it's actually crunching better than I though. :)
And the notebook is really silent unless I run Boinc. But if I run Boinc, airplanes start to take off inside the room. :D

My GTX1050Ti Mobile finished its first long run job. A PABLO_P61925... It took about fifteen hours compared to 3 or 4 days with my previous GT740M. :D

https://gpugrid.net/result.php?resultid=16421214

GPU temperature was about 60 degrees but I'm running 3 - 4 jobs on the CPU too. So it's generally between 55 - 65 degrees for GPU and 70 - 80 CPU. But I disabled CPU turbo boost as it increases the temperature and put the CPU in lower frequency mode.
But the notebook is making a great noise. :D

GPU temperature was about 60 degrees but I'm running 3 - 4 jobs on the CPU too. So it's generally between 55 - 65 degrees for GPU and 70 - 80 CPU. But I disabled CPU turbo boost as it increases the temperature and put the CPU in lower frequency mode.
But the notebook is making a great noise. :D

With 70-80°C CPU temperature, don't be surprised that the notebook makes much noise. The fan is running at it's upper limit all the time (thus probably considerably shortening it's lifetime).
Maybe it would be a good idea to run not more than 1 other job on the CPU, if at all.

I ran Boinc on my previous notebook too, which was much less powerfull with i5 processor and GT740M GPU. Newer notebook is a Dell 7567 with i7 7700HQ and GTX1050 Ti Mobile. Old one survived more than three years until I moved it in my backpack with kilos of frozen meat and condensate it. But I don't always load CPU just load GPU as long as there are jobs and time. The issue was after two years its fan started to make noise during low speeds, but no issue with high speeds. :)

The newer notebook has two fans, so make a great noise. GPUgrid only temps are about 55 - 60 degrees. I add 3 or 4 CPU jobs but I can decrease it to relieve it. I disabled its turbo, so that even with 8 jobs on CPU it doesn't go over 80 degrees. ı leave some distance with bottom of it so that the fans can take as much weather as possible. This is the hottest season of the year; so in autumn and winter it'll be much better for it. Also even if I disable CPU jobs, it's still making a lot of noise. :D I

I would not load that notebook down with any CPU tasks at all, the last thing that needs is more heat. Consider changing the power settings when plugged into have the cpu's clock locked at 100% minimum and 100% maximum.

Without CPU load, GPU heats up to 55 - 60 degrees, much lower than my previous notebook which was mostly between 75 - 85 and up to nineties in summer. So I have some space to CPU jobs. So I disabled CPU turbo and even with 8 jobs on CPU it hardly reaches 80 degrees. But this loads the general system anyway, so to protect it I won't load it with more than 4 CPU tasks and mostly only 2 tasks.