this what i decided on. The GTX 980 is only a filler till i see what the new and upcoming gpu's can do and what they are gonna be able to do. as for the extra case fans those are to mount on the top sense it had the option to do that. I figured why not, better air flow. Anything else i should add or change?
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Definitely wait for 980ti/390X. While The Witcher 3 might be amazing with VRAM, 4GB is minimum for some of the latest titles, particularly if you go beyond 1080p. I'm thinking this system won't be upgraded for at least ~2 years so you're going to want a bit more VRAM to cope with future iterations of games.
Processor seems legit, assuming you're not using PCI-E cards besides a couple of GPU's, sound card, + random expansion card (USB, m.2 SSD, wireless card). 28 lanes is certainly enough to cope with single GPU ~ x16 + m.2 x8 + sound card, however if you intend on running sli/crossfire in future, you may want to consider 5930K. While most modern GPU's are perfectly fine operating at ~98% usage on 3.0 x8 lanes, HBM might push the boundaries of PCI-E 3.0 in future, so
while this is baseless conjecture, the introduction of HBM may push the need for x16 lanes on GPU's for best performance.
RAM is RAM, not fussed, cheapest that doesn't look like a nasty green PCB
ASRock is an OK brand, not a fan of their mITX boards at all, but not much in the way of problems for ATX boards.
NH-D14 is ample, D15 is better but excessively large. I'm a fan of the D14, but for ease of access, I'd also opt for a 240mm AIO.
That NZXT case is pretty sexy. I've had 3 NZXT cases, loved them all, though none of them beat my old TJ07 of yore. I always recommend NZXT in most builds. Great value, very easy to build in.
If that PSU is the SuperNOVA G2, then you could not have chosen a better PSU. A Sea Sonic Platinum might be better, but at that stage it's spending for the lulz. The EVGA G2 units are top notch gear.
Fans are entirely personal preference. Unsure whether your goal is bleeding edge temperatures or silky silence. I opt for Enermax "batwing" fans for silent builds, and custom Dell server fans for best performance (I tear old servers to pieces to steal the SanAce/Nidec fans for my home systems).