As title says, replacing:
Z68 FTW / 2700K (@4.2 on Corsair H100i)
16g corsair vengeance DDR3 1600
Unstable (recently) Silverstone Zeus 1200W PSU
2 X GTX 580sc w/ backplates, in SLI (need good home!).
Not a newb, but would welcome suggestions / tips, such as set-up, & is single 980sc, still a boost over 2 X 580's?
This is 8th build but, busy personal life, has thrown me out of the loop, for a few years, so playing catch-up.
Stuck with EVGA due to past, excellent service/support, despite some other X99's seemingly having a slight edge (more USB/USB3?).
Did I pick well? Oh, and would welcome E-ATX case suggestions that do better cable management. Temjin T09 is an Aluminum beast bust very last gen, with no CPU hole or cable holes/grommets. 
Thanks guys,
 
Note: All stuff is shipped, but, if I goofed(not $ so much, as quality), I could always return
Guess I won't need X-Fi Fatal1ty sound card, as the X99 has creative on-board?
Edit: Suck = stuck
 

Money-wise, that makes complete sense!  I'm in a fortunate position, I guess that not having built for a few, my 'puter budget, is flush, and a second 980sc beckons (+ one of those fancy SLI bling - bridges)! Oh, the humanity
I've always enjoyed, and learned much from you posts, Robert, btw "I stuck with EVGA, not suck", (I'll edit that, lol), and your value point, is well taken.  However I've always "sucked" good mileage out of my products; e.g. my son, has my old 780i SLI (nForce)/QX6700, now with GTX770sc, and still running like a well-oiled machine.
Any other problems you see? I originally wanted Crucial Ballistic Sport, but they're like hen's teeth, and Corsair hasn't let me down, yet.
Will Supernova P2 1000 do SLI with ease?

Thanks to all!
Any thoughts on a case (E-ATX compatible).  I've been eyeing a Corsair Graphite 780T

Thanks, will check those out!  UPS just arrived with all parts except mobo. Oh the tension, the anticipation

Answered my 3): Should have looked more closely at manual, which confirms EVGauge connection.  Took gauge off old Z68 FTW and it works!

Thx!  As soon as the credit card is paid off, I'll SLI the 980sc(have the EVGA bling SLI connector, on it's way!). Already seeing amazing frame rates with one.
Haven't started experimenting with bios yet, other than 1.07 flash.

No, look again at (green) signature: Corsair 2800 DDR4 Vengeance LPX (Low Profile).
The DDR3 (also Vengeance) was my old Z68 build 

Pics? :D

Saifo
oh okay nice, i've used close specs, except i'm using lpx 2666 but it's not booting up on quad channel :'(

Start with one Ram stick, and try moving it to a different slot, until you can update the bios. Mine wouldn't boot until I utilized only slot 3 and booted that way. Once bios was updated, all Ram was recognized.

This isn't the first time that Ram slot 7 has given an issue.  Not sure what to do to fix it though.