Having actually worked in places and know people who work in places which have large numbers of HEDT workstations deployed none of these systems will be overclocked or be used for gaming - that is where most of these are sold,and its even funnier when you are silent about the Core i7 7700K/7740K which ended up beating most of the more expensive Intel CPUs in gaming.
Intel cares so little for gaming performance on their high core count X299 CPUs,they changed the cache organisation,and spent more effort on improving non-gaming performance and introduced a line of rebadged consumer chips for gamers.
All enthusiasts do is moan on forums about CPUs meant for work not running some game "well" and even "well" is them being in a bubble when almost all gamers are still using 60HZ monitors.
If people are paying a £1000 CPU to run a lightly threaded game at a million FPS,I am honestly going to question their sanity,when a Core i3 7350K can be had for £100 and probably will run them as well.
I will also question their sanity when Coffee Lake is only mere months away.
Intel is certainly pushing the new Core-X chips as gaming chips. That seems odd if they didn't care.
Stop twisting things(and also last time I checked the Core i7 8700K was not an X series CPU) - they obviously did not care about gaming for X299 since they changed the cache organisation to meet non-gaming workloads. Not sure what Coffee Lake has to do with X299,or is this one of those must win the internet at all costs arguments where you change the argument??
You do realise I have mentioned Coffee Lake,ie,a consumer platform CPU would be better for gaming.
Maybe instead of staying in your little forum hardware enthusiast comfort zone,go into the realworld and see most of the Intel HEDT deployments and ask people in those places about gaming,
They will probably laugh in your face,and say we are doing real work here,and tell you to go and buy an XBox.
One of the places my mate works at did work on the human genome project in Cambridge and you should look at how many servers and workstations they had in one of the facilities there.
None of them overclocked,none of them used for gaming - that is why Intel makes "HEDT" dies - they are not "HEDT" dies,they are server chips repackaged for prosumers.
What do you think makes them more money,X299 or all the big data centre,supercomputer,etc customers they have. What do you think Intel has stated for more expansion into - oh right data centers,supercomputers,etc.
Do you honestly think them spending all that money on MIC is just because they are bored??
So no,they couldn't give a rats backside about whether X299 runs games well or not,the same as AMD with Threadripper. If they cared that much then why do their consumer counterparts run games relatively better - oh,wait,another enthusiast who believes all the PR bumpf from a marketing department who wants to maximise sales.
Sure,sure buy a medium format digital camera for your holiday snaps,since they can take pictures right?? Or maybe we should buy an MBT for grocery shopping.
If you want to run games the bestest buy a consumer socket CPU. Coffee Lake will be the best gaming CPU out there period. If you are doing work buy one of the HEDT platforms,but don't expect it will beat the latest consumer CPUs in games - they are called a "consumer" platform for a reason and gaming is a "consumer" workload.
Its like someone buying a Quadro GP100 for only running games,when you could buy a GTX1080TI instead which would do a better job.