431
Intel’s Anti-Upgrade Tricks Defeated With Kapton Tape
(hackaday.com)
This is a most excellent place for technology news and articles.
There are many motherboard manufactors but only 2 CPU manufacturers (for PC desktop). Board makers don't "makes deals" so much as have the terms dictated to them. Even graphics card manufacturers made them their bitch back when multi-GPU was a thing - it was them who had to sell their Crossfire/SLL technology on their motherboards.