Computers to avoid list

UEFI is not to be totally avoided as some PC's/laptops do work with LinuxCNC despite having UEFI, example Lenovo M93 PC and Asus Prime Z270 work nicely With LinuxCNC and both have UEFI that can be avoided or disabled.
Some laptops/notebooks do work, but hard to find, i posted about a new-ish Fujitsu that works perfectly well with LinuxCNC, and old Lenovo R61E, and an Acer something or another.
It does not matter at all how many cores/cpu's the PC has, had a Fujitsu-Siemens dual 4 core Xeon that was perfect for Parallel and eth machine control, my Bro has an AMD Ryzen 9 3900 that works perfectly well even with an RTX2080 graphic card, while i have a Ryzen 3600 that does not work for any machine control. This is due to cheaper and crappier matherboard.

And to start a list ( already did this here) :
forum.linuxcnc.org/18-computer/38838-har...ts-used-pc-s?start=0
Not working for any type of machine control :
Dell Latitude E6510
Lenovo X220
Lenovo T420S
MSI B450 main board, AMD Ryzen R5 3600, 16GB RAM, 480GB SSD, Nvidia 1660 super, parallel port header on board:

-Side note:
New motherboards/PC's have way more issues than the older ones as the main "modern cr@p" on them is overvolting the CPU, causing all kinds of side effects such as thermal throttling and completely shutting off some of the cores inside a processor, weak VRM ( voltage regulator modules) that cause voltage drops during heavy load causing the processor to drop the frequency instantly etc etc,

seuchato wrote:

we use only 10% of our brain

That is just one of the many myths some dumb f.... came up with during the 80's, same as with foods, colours (blue=male, pink=female) etc, ....oh and paper money way before all this.