3930K - Are these temps acceptable?

[PiLsY]

One or more screws either not through board or not properly engaged. You can tell its low on contact on one side/corner due to the right to left temp spread.

AC heatsinks come with paste pre-applied (*just spotted this one comes with a tube of paste so worth checking if any has been used, it should be grey not white or silver) and no protective cover, they have a small plastic tray which is clipped over the whole base of the heatsink. You have to remove your intel pushpins/screws from the stock heatsink and fit them to the H mount plate. Theyre so hard to get to and see with a tower cooler fitted this is a really easy and common mistake. I see this a lot both at work with our OEM sourced builds and when ive looked at overheating PCs for people. Mainly on pushpins but ive seen a few cross threaded or just untightened screws. BTX format was a nightmare for it.

If its only load tested and not temperature tested then you can easily miss it as throttling and what pressure it does have on the cpu will stop any crashing. As the heat isnt getting into the heatsink properly you wouldnt by touch notice any temp issue as a lot of the excess heat would be transferred through the motherboard.

[EDIT - Another thought, is the heatsink hitting any of the heatsinks on the board anywhere? That could lift one side of the heatsink enough to throw your temps off.]