Usage of TIM doesnt matter for 99% HEDT users as they won't be OCing. CPU will work fine within official specifications. This forces overclockers to delid. They get lower temperatures and Intel gets rid of the problem of replacing damaged OCed CPUs as warranty is voided. If those complaining 1% of users are unhappy, they can always go for AMD product if they think its better.
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For people interested in Skylake-X, here is (again) list of some X299 motherboards:
https://www.techpowerup.com/233821/...nal-gaming-i9-and-x299-killer-sli-ac-detailed
http://wccftech.com/asus-x299-motherboard-rog-rampage-vi-extreme/
https://www.techpowerup.com/233809/gigabyte-x299-aorus-gaming-9-motherboard-detailed
https://www.techpowerup.com/233864/gigabyte-c422-ws-bridges-the-gap-between-core-x-and-xeon-gold
My initial favorite was the ASRock x299 professional gaming i9, but now that I see Asus ROG Rampage 6 extreme it replaced it. It has 4 evenly spaced PCIe slots. In case of 2-way SLI the little PCIe slot is still usabe. 2x M.2 on that DIMM slot looks easier to cool. Not that it really matters but it has also better Wifi.
Gigabyte C422-WS looks interesting because it also supports Gold and Platinum Xeons in addition to Skylake-X. Intel tried to separate them but Gigabyte found a way to unite them like it was in X99. Lots of PCIe slots, although the rest may be questionable (VRM, BIOS options, memory speeds).
What's your favorite X299 motherboard?