Following the announcement of the Complete Edition of NiOh, the steam page has been opened, revealing the system that you'll need if you want to conform to the minimum or recommended specs for the game.

MINIMUM:
    • OS: Windows® 10 64bit, Windows® 8.1 64bit, Windows® 7 64bit
    • Processor: Intel® Core™ i5 3550 or over
    • Memory: 6 GB RAM
    • Graphics: NVIDIA® GeForce® GTX 780 VRAM 3GB or over AMD Radeon™ R9 280 VRAM 3GB or over
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 100 GB available space
    • Sound Card: 16 bit stereo, 48KHz WAVE file can be played
RECOMMENDED:
    • OS: Windows® 10 64bit, Windows® 8.1 64bit, Windows® 7 64bit
    • Processor: Intel® Core™ i7 4770K or over
    • Memory: 8 GB RAM
    • Graphics: NVIDIA® GeForce® GTX 1060 VRAM 6GB or over AMD Radeon™ R9 380X VRAM 4GB or over
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 100 GB available space
    • Sound Card: 16 bit stereo, 48KHz WAVE file can be played
Interestingly, the minimum requirement are certainly not very forgiving, requiring a GTX 780 simply to run the game. The recommended requirement correspond to a fairly high-spec PC, which isn't too surprising considering that the game features really nice visuals. The PC version will include two visual modes. "Action Mode" will ensure a stable 60 FPS, while "Movie Mode" will support resolution up to 4K. I suppose that there might be further ways to tweak the game to our taste, but unfortunately information is scarce at the moment. I reached out to Koei Tecmo for a clarification on this. A new batch of screenshots can also be enjoyed in the gallery below, giving us a glimpse of what the game looks like. If you're unfamiliar with NiOh, and would like to learn more about the game, you can check out my own review of the PS4 version, where I tell you pretty much everything there is to be known.
Nioh