Is this prospective gaming build viable? PCPartPicker says "Yes", but I want to check here.

are you also doing content creation or anything besides gaming?

well I am realy mad you posted this, but it looks like you didnt research at all... this build in fact is very ridiculous... so many things listed here have nothing to do with playing games or advanced... let me tell you what exactly...

cpu... cpu is ok, but yes an overkill... but if streaming or such then its perfect... I wont argue about cpu as its the core for any tasks...
gpu yes, definetely.. yo uwill be able to play games on 4k on great settings no doubt..
memory... for games you need only 8 gbs.... you can get 16 gbs for convinience, a lot of tabs in browser etc... you can get 32gb to feel good about your rig... but 64gb is just not right.. even serious content creators are happy with 32gb...
another thing is that games dont benefit much from higher speed memory... from 1600mhz to 2400mhz you will get 1-2, maybe 3 fps... so if you want high end, ok, get 2400mhz speed... above that no, it will requier more cooling, more care, and for nothing...


motherboard and cpu. the motherboard is realy for serious content creators, and cpu is 6core 12 threads, very stronger than a general i7... theres no problem, only that these motherboards cost literaly twice as much, and cpu almost as much... you can get a 1150 socket z97 board for half the price that will overkill, advanced, and with 5 year warranty...

cooling and gpu... the graphics card has a cooling radiator and the cpu cooler you have here has the same... there is no problem, both are amazing.. but just to let you know... see if you can mount it in the case... you can get a 240 radiator for cpu cooler, like h100i

the hard drive... oh man... you pay so much for so many gigs cramped in 1 drive... it might also be enterprise graded... the reality, 4gb drives dont last long, and here theres 6gb... I get it you want good storage... for 500usd... get an SSD, it is faster, reliable, quiet... if you must spent money on storage get an ssd... you already have one yes.. you can run 2 ssds in raid (synergy) so they work even faster... if you need realiable storage in large quantity, buy WD black edition HDD , 2-3gb versions... much cheaper and reliable, but not that...

sound card is ok, but a hint.. new montherboard have such good sound chips on them (especialy gaming ones), so I personaly wouldnt get the sound card... it plays with sound signal, it needs more software drivers, and hard to say if the end sound will be worth it... best invest in a sound system outside the machine

PSU is overkill but I wont argue... in truth you can go for an overkill psu, that means it will work on lower loads where it is more efficient, it wont overheat, wont make a lot of noise...

there..

If your only goal is a futureproof gaming build, and your budget is 5k, you can do a lot better than that.

yeah.. you can do a fancy water cooling loop with this money.. that would be advanced its not a common sight

Threw this together in a couple minutes, better for gaming and cheaper than the build you posted http://pcpartpicker.com/user/IN3RT1A/saved/L7GnTW

Even if you don't like the build I posted, here are some revisions and things to keep in mind when you're creating the partslist for your future proof gaming build:
1. You don't need an lga 2011 cpu like the 4930k. TOTAL overkill. People are still gaming on 1st gen i7s without being bottlenecked. Something like the 4970k is plenty for futureproofing
2. A 500 dollar motherboard should definitely not be a priority, the funds spent on this guy and the overkill cpu could have been put towards better graphics processing.
3. You don't need 64 gigs of memory for gaming, not even close. Again, money better spent on graphics processing, because in 2016, your gpu will most likely be your bottleneck.
4. Well, that's about it
Edit: 4790k, not 4970k. numeric dyslexia

something like this
http://pcpartpicker.com/p/MkmrRB
3 ssd raid 0

then I would get custom cables
http://www.evga.com/Products/Product.aspx?pn=100-CR-1300-B9

and go shopping to EKWB
http://www.ekwb.com/shop/blocks/vga-blocks/ati-radeon-full-cover-blocks/radeon-rx-200-series/ek-fc-r9-295x2-acetal-nickel.html
and would buy this and cpu block and a whole loop

and some nice case...

that would be advanced and blow your friends eyes out