As to your 2nd question, people's desires when getting a laptop are counter intuitive .... light and thin run counter to battery life, performance and running cool. Our laptops run normally around 43 - 55C running CAD and in Gaming in the low 70s. New, I ran my personal lappie overclocked, tested it with Furmark and temps were in the 70s. They are made by the same company (Clevo) that built Alienware before the Dell Purchase. Each one is custom built with options on screen, CPU, GPU, RAM, Storage OS, Wireless, and even TIM (IC Diamond . Grizzly Kryonaut). The heat sinks are heavy copper. The fans barely ramp up but you do have the ability to set them to full speed when gaming to 100%. Most folks wouldn't recognize Clevo as they are often branded by their distributors. Alienware was the best known of these but WidowPC, Falcomnorthwest are other more well known names. But that's the same thing with most laptop brands people "know".
Quanta sells to (among others) HP, Lenovo, Apple, Acer, Dell, NEC, and Fujitsu
Compal sells to (among others) Acer, Dell, Lenovo and HP
Wistron (former manufacturing & design division of Acer) sells to Dell, Acer, Lenovo and HP
Inventec sells to HP, Dell and Lenovo;
Pegatron sells to Asus, Apple, Dell, Acer and Microsoft
Foxconn sells to Asus, Dell, HP and Apple
Flextronics (former Arima Computer Corporation notebook division) sells to HP
Clevo builds the Chassis, CPUs, RAM, GPUs, storage and Wifi options are installed per customer order, Tho getting rare, desktop CPUs / GPUs and even SLI have historically been available. Best part is they cost less than comparably equipped laptops from the above brands.
As to laptop coolers, when I overclocked my 1st one, i thought it give one a try. Test was:
Lappie on Desk
Lappie on Engineer's scale
Lappie on cooler.
Being an engineering firm, got plant engineer's scales laying around, placed one of these under the laptop to get back end off desk
For the 3rd step , used a 3 fan laptop cooler. Measuring CPU and GPU temps as well as surface temps (infrared thermometer). I found :
1. Plugging the laptop cooler into the USB port of the lappie burnt out two USB ports on the right side of the laptop, keft side survived. If you are going to use a cooler, make sure that you use a independently powered USB hub.
2. As the cooler fans did not line up with the laptop air intakes and presumably, as the inside of the 1.25 " laptop half fair amount of space, little CPU / GPU heat is removed by conduction thry the chassis. there was no significant temperature change. I imagine thus would be greater on a super thin laptop.
3. The engineering scale had the biggest impact on CPU / GPU / HD temps
Looking back, I wish I had measured the desk and laptop cooler surface temps.
The laptop was purchased in 2012 and is still used every day.