They got a tiny die-cast heat sink with a heat pipe on the CPU. Looks like they used about a mile high pile of thermal compound between the CPU and the heat sink. When I saw it I was just like yea this is trash and the engineers musta been fucking completely baked.
I was given a box of junk laptop motherboards some years ago but I binned them now.
Some Toshiba
Lots of Acers
Hp
and some Hannstar (not sure what make and model they came out of.)
Most them still had the processors and a heatpipe still intact and the the copper pipes were dark and black.
The copper joints on the board also showed that colour.
Obviously they overheated.
I chose a Lenovo laptop which is over 9 years and it works with no problems but its been through 3 batteries.
The one I choose has got two fans, one for the quad core processor and one for the Quadro graphics card. The are six vents on the sides, back and underneath. The air comes in from the side and the fans blow the air out at the back and doesn't depend on anything blocking the vents underneath.
It cost me a lot but it is turning out to be worth it.
I knew back then that there would be problems with the ones selling in the local shops when they put one tiny vent at the bottom and my suspicions turned out true for the amount boards I replaced over the years for customers.
Edit:What I also find is that when you put them in sleep and place it in the bag, the battery drains quick in some of them so they turn in the bag to shut down something stops it so it overheats.
In my case I narrowed it down and it turned out to be the Quadro Display driver at the time which can cause it to hang when going into or coming out of sleep. Now I just shut it down and never put into sleep. I have seen the sleep issue happen to lots of other laptops in my time.