So current build strategy. Tell me if you see any faults.
Things I already have
H100i
Radeon VII
Things I ordered just because
Fractal Design Nano S (black no window)
SF800LTI (Sold myself on the Nano before I realized how close the GPU would sit next to the PSU. This should create a significant gap.)
2x16 of Samsung B Die 3200 (this is a choice more for my other system, it has 32GB of the exact same memory in it. If I upgrade it to the 16c chip later, Ill move this over and go for a higher clocked memory for this system).
The parts I will get after release.
CPU: 3800x (I will be swaying back and forth till reviews on this and the 3900x,, but I feel the 3800x is where I will land).
HDD: 10TB Hitachi
SSD: 970 Pro 1-2 TB, or PCIe 4.0 NVME drive if one launches and seems really good. Don't know if I can trust all the Phison drives that have been shown.
Mobo: X570 Phantom Gaming-ITX TB3
Setup. This will be a tabletop PC. It will be considerably larger the then M1 based system I am currently using. But for a couple reasons wanted to pull back from going that small again. That's why the case is what it is. Still a tower config. A little bloated. But not Mid or full tower bloated. The plan is to use the H100i as a filtered front intake and a single rear fan as the exhaust (positive pressure build).
One unique question that sticks out is, should I replace the Corsair H100i fans? I am thinking Noctua. If so what fans are a good replacement for this. The idea is this will be a bedroom gaming system. It will generally be off when not in use but there will be times that I am running it while I sleep. This isn't terrible on the M1. But there is a lot of room for improvement.
Have you checked the clearance for the H100i radiator and the Radeon VII, if using the radiator as a front intake on that case?
Last year, I built a 2700x with an H100i and a Sapphire Vega 64 Nitro, using the Fractal design Define S--I had actually bought the same Nano S case that you have, more than a year in advance, anticipating the same plan as you, but with no idea what CPU, GPU, mobo, let alone PSU I would need/want (Zen actually didn't exist at that point, lol, let alone Polaris...so many things happened and I ended up waiting out the first gen Zen, with a case and some new RAM just waiting to go in something, haha).
Anyway, Once I eventually picked up the parts I need, I ran into problems from the beginning: There wasn't a ITX-PSU that I trusted in the 700W range that would fit in the Nano S, without choking 1.5 fans on the Vega 64 Nitro. (I originally was hoping for a ~400W build, but the AMD offering that were available...long after we knew their constraints, just wouldn't allow it, imo).
Also with the Nitro--I can't fit the H100i's radiator as a front intake because the V64 Nitro is beastly long...I think the Radeon VII is at least as long, right? and you are going with the Nano S, which has even less clearance.
I did replace those fans, though. I used some fancier Corsair ones, I think...the magnetic bearing ones or something...or maybe they are Noctua. I forget, lol.
I also found that mounting the heatsink for the H100i on the CPU was incredibly difficult in this case--especially because I had to use the radiator on the top. Not a lot of clearance, and some frustrated snapping-into-place with the bracket, but it eventually worked. And this was the larger case with a a full size ATX board (X470 Taichi). I told myself afterward: I am
never going to bother with this ITX dream again, lol. I'm also a bit noobish with fake water cooling and this was my very first attempt with anything close to it, even though it is an AIO.
By the way--I still have the Nano S in a box, barely touched...because who knows, right? lol