I'm totally satisfied with my 7700k/1080mini S4 Mini's performance and portability at this time (i haul it to and from work every day (so much so that I might even buy a SECOND Dell-330W power brick, just to minimize having to carry it around too). And I am SUPER hyped for the x299 Mini-ITX boards and Sky-X and Kaby-X chips... not salty at ALL to lose the "top performing S4 Mini" build bragging rights in the future, lol. If you future S4 Mini owners (or current ones can who will upgrade) will have your builds to fit a 1080 "Ti" Mini, and a HUGE 6-8-10-12 Core Intel x299 CPU in there, by all means do it, but let's also keep our hype realistic, fellas.
We're at the point where we are just trying to cram the most powerful parts we can into such a small enclosure. Sure, no one 'needs' that much power, but that is kind of subjective, and that's not what I like about building in the S4. I like trying to make the system a powerhouse and a half.
Okay,
so X299 Mini ITX boards seem to exist. But we all need to remember some VERY IMPORTANT FACTS, these motherboards are going to be running
Skylake-X and KabyLake-X CPUs in socket LGA2066 ... which all are over 112-140 Watt TDP...
We already have temperature issues with the 91W 7700k and 6700k (unless we delid it AND spend $$ to Frankenstein an LP53 and NF-A9x14PWM fan to fit in an S4 Mini) ... So a Kabylake-X CPU like the 4C/8T 7740k (which is the lowest they have) is NOT going to be able to be cooled decently inside an S4 mini unless we get a better CPU HSF thats under 47mm along with a better fan too... OH and have we even SEEN any LGA 2066 CPU HSF's that are under 47mm? Or at least mounting options for our current Mini-ITX coolers like the NHL9i or LP53 that work for LGA2066?...
But there's hope: something that MIGHT helps is
if we decide to DELID a Skylake-X or Kabylake-X chip (which seems to be possible) but without a proper CPU HSF solution, delidding an LGA2066 CPU STILL might not be enough to cool a 112 or 140watt TDP chip inside an S4 Mini.
And lets not forget that these x299 ITX mobos will probably all be dunning DDR4 So-DIMMS, lol.
AND these x299 CPUs have no integrated graphics, so we're giving that up as well.
So guys, let's be hyped for the availability of these amazingly compact x299 Socket 2066 Mini-iTX mobo's, BUT... let's keep expectations real.