Thank you for your reply, Fritzz!
159mm (H) x 116mm (W) x 51mm (D) - Cooler Master Hyper 212 Evo
158mm (H) x 125mm (W) x 45mm (D) - Noctua U12S
159mm (H) x 140mm (W) x 50mm (D) - The SST-AR03
+ 120mm x 120mm x 25mm fans
It seems there's no difference between Hyper 212 Evo and the AR03 then.
The post you've linked
makes me sad.
- "212 Evo backplate and the P8Z77-I Deluxe's circuitry" - some crazy workarounds Rubber and some juggling.
- "Memory and the 212 Evo" - low-profile memory should be used I take it? But it does not mention if both slots will fit.
- "Now, spots 1 + 2 are taken up by the full size graphics card, spot 6 can easily fit one full size 3.5" drive in the rightmost bay, but spots 3-5 are ridiculously hard to fit 3.5" drives into (2.5" drives you can mount backwards - in fact I recommend it if your PSU's cables are long enough - so they're fine). To do it, I had to whip out some SATA cables with 90° connectors from a previous build (the P8Z77-I Deluxe package gives you 1x 90° 6GB/s SATA cable" - this is my scenario too it seems, I will have an M.2 type SSD disk mounted on the back and two 3.5 disks in mirror in slots 6 and 5. Slot 5 is going to be a pain to assemble.
I've actually contacted the PSU support and their reply was a bit shady and non-definite:
Many thanks for your request.
According to specification of Fractal Design PSUs need to be shorter than 160mm with modular cable management if you are going to install long expansion cards.
As our PSU Nightjar Series NJ520 has got modular cable management and a length of 160mm it might be tough.
So it's not compatible, unless I use two-way scotch to mount the PSU a bit closer to the other case side.
Eh, so I'll probably keep my fingers crossed and hope I can get Seasonic Platinum Fanless 520W PSU for this build. Cause it just might be that I'll find some available.
If someone's interested the only other PSU that qualified the Node 304 mini-ITX and the silence craze were:
Corsair CS550M 550W modular 80 PLUS Gold or Corsair CS550M 450W modular 80 PLUS Gold - both are semi-modular (cable management issues) and the 450W one requires some voodoo if you want double 6 PIN connectors, it only has one out of the box. But judging by specs - it will be sufficient to power i5 + GTX 970 or even GTX 980. Both of these PSUs have less than 20 dbA, which is quiet and that's at 100% load.
Corsair RMs are quiet too, but too big if you want a full length video card, unless the two-way scotch thing.
SilverStone SFX Series SX500-LG and SilverStone SFX Series SX600-LG are so noisy - you'll cry + coil whine.
About storage - probably you have your node (NAS) stacked away somewhere safe, far away from the desk and vibration or HDD work noises are not noticeable. I have a trauma from HDD vibrations in my "Define R4 - Fractal Design". Vibrates like hell, without the HDDs though - it's truly silent.
So I found this nifty table here
on silent PC review and decided to crash my piggy-bank for WD RED Series. 13-14 dbA and almost no vibration - sold.
Hard choices are hard.