Will my psu fit?

[SlapHappy6]

will these components fit in an NZXT H440 or NZXT S340?

CPU: i7 4790k
RAM: 8gbx2 G.Skill Ripjaws-x ddr3
Motherboard: Asrock z97 extreme6
PSU: EVGA superNOVA p2 1000w 80+ platinum supply
SSD: Samsung 850 Pro 128gb
HDD: 2tb Seagate Barracuda
GPU: gigabyte gtx 970 gaming g1

 

[SkyBill40]

The H440 is a pretty good sized case and all of that gear should fit just fine.

 

[volcanoscout]

I wasn't able to find an official spec on max PSU size for either case, but PCPartpicker lists both cases as compatible with that PSU and online you can find multiple builds with the same combos. The rest of the components you listed will fit with no problem.