Hey all,
New to posting but I've been reading SFF for over a year now. Great community.
I'm finally getting around to publishing my build/review of Brian's case. Photos below:
Construction
As others have said, this case is built like a tank. It has the thickest paneling I've ever seen, and they're steel. The handle is a weapon. The included riser is of extremely high quality.
This means two things: 1) the s401 is keeping your components safe wherever you go; 2) it may be heavier than other premium SFF cases, namely the Ncase M1, which is also of a different overall form factor.
The acrylic panels, should you choose them, look fantastic. Swapping panels between the standard steel and the acrylic is easy due to included thumb screws.
There isn't a lot more to say here. It's excellent. It's sturdy. It's the opposite of janky or flimsy. Build quality like this isn't generally achieved at a sub $200 price point.
Build Experience
The easiest SFF build experience I've had, and I've built in the admittedly large Thermaltake Core V1 (which while also very easy, included an incredibly frustrating HDD/SDD mounting experience and wasn't very aesthetically pleasing with its ultra thin, crappy panels and scratch-heavy 'plastic window'). Using a Corsair SF600 and the stock cables (save for the necessary premium Corsair SATA cables, which you can buy individually for no more than about $10), I found cable management here more or less as easy as any other case I've built in (though nothing is quite as easy as cases which let you just shove everything into another chamber/below the motherboard).
How you ask? Two things here: 1) the Corsair SF600's cables are generally the perfect length, 2) the cables have very few places to actually go. There is pretty much one correct way to do this, and if you do it carefully and properly, even relatively novice builders should be able to achieve a clean presentation; this is due to how well Brian designed this case. Though some note that the included SF600 cables are too stiff to easily work with, I at least had no such problem: I simply bent them the way I wanted, then secured/fastened them with respect to the other cables where necessary.
Though I'm aware there are many out there who want nothing less than perfection out of their cable presentation (and certainly won't be satisfied with what I consider relatively 'clean'), I feel that for the size of the s401 it is possible to achieve remarkably pleasing cable management.
While building in the s401 doesn't have some of the conveniences you may be used to in modern cases (namely tool-less HDD installation), every inch of space is so carefully used that you will understand why. Slot trays would simply have nowhere to go behind the GPU/riser, or add to the cost of the case/reduce its 3.5''/2.5'' flexibility. It's fine. Get a screwdriver.
Performance
Again, I know that I might be stretching belief here for this form factor, for the lack of fan availability, but...
this is the quietest case I've ever had. By a lot. And before my foray into SFF, I had some very, very large, well-built airflow cases.
Why? It's designed to allow for it. It has so many opportunities for air to enter the case that it can arguably be considered 'open air'. One might think this would make noise pollution more likely, and while that is technically true, a quiet fan paired with a quiet card will result in a supremely quiet, case-fanless operation. That may sound piercingly obvious, but many may not realize just how much case fans contribute to the overall acoustic performance of a case (since people tend to focus on the CPU/GPU fans so heavily). Along that vein, let me quickly go over my build:
CPU: AMD Ryzen 1600
Cooler: Noctua NH-L9a AM4
Mobo: ASRock AB350 ITX
RAM: GSkill Ripjaw V Series 16GB DDR4 3000
GPU: EVGA Founders Edition 1080Ti
PSU: Corsair SF600
That Noctua is quiet. Paired with Thermal Grizzly paste, in the s401 it has the same thermal performance as AMD's remarkably decent stock Wraith Spire cooler (which has a way larger heatsink), and I used that cooler in a case with 1x 200mm fan, 2x 80mm fans, and 1x 120mm fan. In other words, a larger case with a fair amount of air coming and going out of it. I wasn't expecting that result.
The GPU is neither the quietest nor the coolest due to its blower/reference design, yet it is still extremely cool and whisper quiet at idle in this case; idling at 27-29C and staying as cool as my previous, larger airflow case in rigorous operation so long as I set the fan to a user curve in MSI Afterburner (which I had to do in my previous case as well anyway, likely due to the reference design).
In spite of a common and often somewhat misguided wisdom that blower style cards are better performing in SFF cases, the s401 is yet another case where a good aftermarket card/cooler is going to perform better due to its open design/the fan's proximity to the panels.
The caveat to all this: when orienting the case vertically (which this entire review is based on), the top component will receive heat from the bottom component. The optional 60mm fans have been shown to help with this slightly (about 2C), something which I decided wasn't worth the added noise. Since my CPU sits on top of the GPU, it gets warmer than it has in previous cases due to warm air rising out of the case; however, I haven't seen it break the 60C range. More aggressive fan curves when gaming/rendering will generally resolve these issues, and acoustically speaking, if you are working with headphones/music/or even just keep the case beneath your desk, this isn't really going to present an issue.
While I can't provide measurements, subjectively speaking (in my environment) I cannot hear the operation of my components in this case at idle if so much as my central air is turned on, if so much as the external HDD is spinning (even though I have the case positioned on my desk, next to my monitor, just over one foot from my face). When listening to music, a video, or when my wife/kid are making any kind of noise in the next room, forget about it: I can't hear what's going on inside this case at idle. As a writer, most of the time I spend at the PC doesn't stress the hardware, so this is all I need. When it comes to gaming, either my speakers or headphones take care of any trouble the acoustic performance of this case might cause me (and again, if I had a non-reference cooler on my GPU, this aspect would be even better). If I positioned the case under my desk (which I'd only do if it didn't look so damn good), this aspect would, once more, be better.
Long story short, surprised by the thermal and (depending on your components) acoustic performance of this case. I don't pretend to be an authority here, and I don't make a living off reviewing PC hardware or components, but this is my honest experience as a PC builder of 10+ years.
Conclusion
I am wowed by Brian's work here. This case is well-built, cool, quiet, efficient, and less than 8 freaking litres. It wedges itself into a competitive, exclusive space for premium SFF building. It has the 'console' form factor while being more readily available than the Sentry (which nobody can seem to get), and capable of complimenting full-size GPUs in contrast to the S4 Mini. Brian prices his case very competitively, actually includes a high quality riser at no added cost, and offers customized acrylic paneling which looks fantastic.
Speaking of Brian, interacting with him in questions, discussion, and indeed in business has been an incredible pleasure. He is customer oriented, fair, transparent, and earnest in his work. Supporting him directly supports his family and the ongoing success of the labor of love which is the s401 (your money isn't going to an amorphous corporate machine, which is often one of the best things about supporting small projects).
In case you are wondering, no, I absolutely was not asked to either review or promote his case; I'm just very enthusiastic about his project and wanted to share it with others. I am in no way affiliated with Salvo Studios.
If you are thinking SFF and are attracted to the 'console' form factor, I strongly recommend you take a serious look at the s401. If it isn't available, feel free to ask Brian either at his website or the SFF forums about future availability. Brian is also working on a larger case, the s701.
This case is a keeper and one I plan to build in for years to come.
Alex