Which hardware to keep the level of trust ?

[Jean-Francois Simon]

Dear all,

After having read infos about breaking into bios and other type of 
attacks, has anyone info on which hardware best suits OpenBSD to avoid 
unpleasanties ?

I was thinking of PIC 32 Microchip but surely difficult to implement an 
OS running into it able to handle normal desktop activities.
On the other hand I have absolutely no trust in public brands of 
motherboards since they allow bios update.

If one had to find a hardware most difficult to compromize which one 
would you take ?

J-F