Pegasus - NFC x NCASE Skyreach 5 Mini (S5M) - Ryzen 7 7800X3D/Radeon 9070 XT
This is Pegasus, a small form factor system born from my former media room gaming PC. I’d love to tell you why I named it Pegasus, but I’ve honestly completely forgotten. I was probably feeling inspired by the Skyreach naming and thought this magnificent silver case shone like a Pegasus in the sky. So I’m sticking to that explanation.
The arrival of the NFC Systems x NCASE Skyreach 5 Mini was perfect timing. Following my migration to Linux, I committed to the platform across the board. This led to a complete overhaul of my personal and professional PCs. For my office PC, this involved transplanting an Intel Arc Pro B50 into the A24v5 build and running Fedora 43. It was smooth sailing for a time, but a subsequent software regression sent the Intel drivers into a daily tailspin. That lack of reliability was a no-go for my productivity. I wanted to grab an AMD GPU, but finding one small enough proved difficult outside of the entry-level RX 6400. Higher-end half-height options for Team Red remain frustratingly rare.
For a while I took a bunch of panels off of the A24v5 and shoved a 9060 XT into it. It looked exactly as goofy as it sounds, but it did the job for a bit. Once I heard the S5M was about to become a reality, I knew that was this build’s next form. I signed up for S5M notifications and sat ready for that email. I don’t think I’ve ever gone from a notification email to checkout faster in my life. Fast-forward a week later, and the S5M arrived… somewhere a few blocks from my doorstep (thanks UniUni lol).
## The Hardware
Case - NFC Systems x NCASE Skyreach 5 Mini (S5M) Silver
CPU/Mobo - AMD Ryzen 7 7800X3D
Mobo - Gigabyte B650I AORUS ULTRA
RAM - G.SKILL Flare X5 Series DDR5 RAM 64GB (2x32GB) 6000MT/s
Storage - 2x 2TB WD SN850X NVMe SSDs
GPU - PowerColor Reaper Radeon RX 9070 XT w/ Custom NFC Shroud
Cooler - Thermalright AXP90 X47 FC + NF-A12x25 G2 PWM chromax.Black
PSU - Corsair SF750 (2024)
Custom Cables - ZCooi Mod
The PC building hobby has taken a morale hit; for some reason, we’ve kickstarted our own obsolescence, and now we can’t have nice things. Usually I’d sell off parts and start fresh for a new build, but this time I shuffled and re-purposed things. The 9070 XT, Thermalright cooler, Noctua fan, and power supply are new for this build. The 7800X3D I’ve found to be a great performer for my needs, even if that makes this build a gaming PC in a business suit. It does very well in small form factor systems since it doesn’t like running hot in the first place.
For cooling, I originally planned to use the Noctua NH-L12 Ghost S1 Edition. I had it in the system for a few weeks, but I didn’t like the sound profile of the cooler with the 92mm fan. Thermals were fine, but I saw people in the NFC Systems Discord server trying all kinds of interesting things. After browsing there, I decided to pick up the full copper X47 and had an adapter printed to mount a Noctua NF-A12x25 G2. I stuck with my trusty Thermal Grizzly PhaseSheet PTM, as it’s served me well in many builds now. The combination of X47 and 120mm G2 isn’t the all-around best for pure CPU cooling, but it did better than the L12GE while also keeping the rest of the motherboard components cool. The sound profile with the Noctua fan is silent, and even if I make the fan curve more aggressive, the low pitch hum is barely detectable until over 80% fan speed from where I sit. The CPU side of the case faces me. For my day to day work, I see CPU temps between 60-63C for light tasks and 67C at the highest end. As for BIOS tweaks, I opted to leave the 7800X3D to its own devices outside of setting memory speed and timings. The singular benchmark run I did with 70C PBO mode enabled didn’t net any gains. The fan profile I manage inside Linux with CoolerControl. I’ll go over gaming temps in a bit.
When it comes to power supplies, I am a creature of habit. When I build something that uses SFX, I just grab a Corsair SF power supply. I know what to expect and I know I can get custom cables easily. The SF750 (2024) does its job well. The fan doesn’t run unless it needs to, and it delivers clean power. The cables that come with it are a perfectly reasonable length and work very well inside the S5M. Over the years, though, I’ve found that custom cables really do make that last 10% difference when the build is done. A friend of mine mentioned Zcooi Mod was getting his hands on an S5M and is developing cables, so I ordered a set. The pricing was excellent, and delivery times were reasonable. I grappled with the decision of black vs. gray cables but went with gray to contrast the rest of the black parts and complement the silver. They came out great with not a millimeter wasted.
## Don’t fear the Reaper
For my graphics card, I did some trading and eventually ended up with a PowerColor Radeon RX 9070 XT Reaper. This is one of the smallest 9070 XTs, so it was an excellent fit for the S5M. During one of my conversations with Josh from NFC, he mentioned he was developing a shroud kit for the Reaper, and wanted to know if I was interested in helping. Once the kit arrived, I pulled apart the card and began to see how everything fit. Josh prepared me for the option of tapping the existing holes to M3 and mounting the card from the top. Instead, we eventually figured that reducing the diameter of the holes on the mounting plate would allow the existing screws to be reused in the exact positions they were in before. Additionally, matching holes were added to the final fan mounting plate to allow the slightly long stock screws to pass through. In doing so, anyone can install this kit without needing additional hardware. I used Noctua NF-A9 fans with my shroud. In this revision of the shroud kit, the dampening pads make installation a little tight. I would recommend leaving them off, but it is possible that Josh will address this with an update to the design.
Once everything is joined together, this card takes on a more industrial and purposeful look. One of the more striking things about it is how seamless it is. A lot of shrouds like this are two pieces due to small print beds. If you’ve seen Josh’s 3D printing content, you know he has some big printers. Installation of the card into the case is best done with both panels off since the shroud side of the card obscures the view a bit. With the shroud attached, the GPU now completely fills its chamber, giving the system a completed look even before putting the side panel back on. Given my office is temperature and particulate controlled, I am strongly considering leaving the GPU side panel off (I left it on for all the testing I did).
## Reaping the benefits
The performance of this card post growth-spurt has me pretty excited. I’ve been lucky with a few CPUs over the years. I had a great overclocking 8700K and 7980XE, but my GPUs have always been average. This 9070 XT Reaper though? It performs better than the Hellhound variant in my larger NCASE M2 Grater build. The proper way to test this would be to shove the modded Reaper into my M2 build and test that, but I do not have time to take down both PCs to do it. Maybe one day. That said, a score of 7976 places my Reaper in the top 1% of the 7800X3D/9070 XT testing pool in Steel Nomad DX12. I’m pretty happy with that result considering it’s a 10L build.
In stock form, I couldn’t touch memory clocks for synthetic benchmarks. Anything I did would cause freezing. With the shroud mod, I was able to set the memory clock to 2760, and actually see those numbers at peak in Steel Nomad. For the core clock, I had good results at +105MHz. Any more than that, and I would start to see either no change at all or score regression. 3157MHz is the highest clock I saw with my own eyes in synthetics. For the undervolt, -90 seemed to give me the best results.
I should make it clear that I don’t push the core or memory clocks when gaming, that was just for synthetic testing. I simply undervolt it and leave everything else stock. Doing so meant I have some excellent temps of around 60C in both Crimson Desert and Grand Theft Auto V Enhanced with settings cranked. CPU temperatures were in the mid to high 60s during gaming. All testing was done in my temperature-controlled office at a constant 75F (24C). For now the fans are stuck around 1400RPM any time there’s a decent load while attached to the GPU header. I may attach a Noctua LNA down the line, but from my desk, I don’t hear the fans. If I put my ear to that side of the case, it is a low pitch hum.
The case itself distributes heat very well. I did all of my testing with the panels on. As with my previous builds, I used a Flir One Pro to take thermal images. The Crimson Desert images are in my lab, which sits at a warm 79F (26C) during the summer, though the bench it was on is next to a rack, so I assume it was closer to 84F (29C). The 3D Mark looping runs were taken in my office, which is temperature controlled to 75F (24C).
Note: The first two set of images is before the custom shroud, the next two are with the custom shroud.
## Building in this classy silver chassis
The case is stellar. Like my other NFC cases, it has a sophistication that defies its simplicity. The silver catches the light wonderfully, and the mesh side panels look rather dapper. Perfect for my office setting. Fit and finish remind me of my M2 Grater. There isn’t a single flaw in the metal or the black powder coating. Once the panels are removed, inside the case are two central braces. The silver cross brace holds the GPU riser and the black has two points for mounting the motherboard. The basement of the case has the other two mount points, a power supply mounting bracket, and a short cable to route power out the back. The top and bottom of the case sport iconic SkySlots, with the front and back panels being removable for the endless mods to come.
This is my first console style PC build, but installation was relatively straightforward. I know full well from previous SFF builds that preparation is key. I first connected the 8-pin EPS and 24-pin power to the motherboard to save my fingers from impossible to reach spaces. Next came installing the motherboard. The standoffs arrive a bit loose, so be sure to tighten them. After removing the PSU bracket and attaching it, I plugged in the power extension and did some managing to make sure as much of it was hidden under the bracket as possible. There are mounting holes here for a 2.5” SSD, which is nice since you may have to use one in this flash-starved economy.
I purchased the S5M with the PCIe 5.0 GPU riser. The one it comes with is rather stiff, but it holds its shape well once you finagle it in place. Since there was wiggle room, I loosely mounted the riser in the GPU “chamber” and slid it back and forth with the 9070 XT until I found the perfect spot. After marking that spot, I took the card out and did a final tightening. The rear retention piece sports the only bit of branding, which is a subtle NFC logo. Since my card is only a two-slot, I bought some pretty slick mesh PCIe brackets. For final installation of the GPU, I routed the PCIe power cables, and then tied them to make hiding easier. NCASE included a matching stand with the S5M. It comes with plastic risers, but I didn’t use them. Sure, they allow more airflow, but my 9070 XT, especially with its shroud, doesn’t need it. All in all, if I subtract the obsessive photo taking, the build took 45 minutes.
## Custom tailored touches for this tiny tower
A few weeks after I did my provisional build, some NFC mainstays showed up. I ordered NFC’s classic custom machined, ultra tactile switch. I opted for two custom bezels. One maple, one carbon fiber. The maple bezel mounts with the traditional hardware. The carbon fiber bezel mounts with a spacer kit and achieves its screwless look by relying on the machined switch’s retention nut. It also allows a slightly longer GPU clearance.
This is the look. The stock black bezel is nice enough, but these custom bits are why you buy NFC cases. With everything I’ve done to tie this build together, it looks like a completely different system.
## Case and Effect: A community-driven core
The broader SFF community is filled with strong personalities and stronger opinions. I’ve come to understand more about the community surrounding the NFC cases in particular in the time since I built in the S4T. The NFC community is as much a part of the case as the panels that enclose it. There are lots in the SFF community that look for the most optimized case layouts and will scrutinize every liter, but it’s a bit different here. The very active imaginations of the NFC community see the case, and they figure out what to cram into it as they build and rebuild. Together with Josh, Erick, and Dru, many mods are born. Many of the 3D print friendly designs NFC comes up with are provided to the community at no cost. There’s always someone around to answer a question, take a measurement, or share an idea.
The community effort around cooler testing and fan configurations has been fun to watch. Members like Mike Venture and TK Labs have pitted all the cooler and fan options against each other and continue to work to find the best pairing. The 66mm clearance is seen as more of a challenge than it is a limitation. When all the data is compiled, they will release a companion spreadsheet. I’ll link to it here when it happens.
The future of the Skyreach 5 Mini is exciting, and this community is why. The person who pushed me the most into the community goes by Damascus. He’s an enthusiast’s enthusiast. He went off the deep end with water cooling, then with SFF, and finally combined the two. The build started as an Intel Core i7 6700K with an MXM (laptop) GTX 1070. In true enthusiast fashion, he couldn’t stop there, eventually frying that sentient sand in pursuit of running mutant 10th Gen processors. Its loss was not in vain, though, as its final form saw it become an Intel QQLT, an AliExpress creation that rivals a Core i5 10400. The GPU was also upgraded to a Quadro P5000 16GB, making this one powerful Frankenstein of an S4T.
Barely hours after unboxing his S5M, Damascus is already deep into his next crazy creation. I’ve seen a few mockups, and if it works out, it will be quite the impressive use of space. I’ll be keeping tabs on his build log thread as he attempts to water cool a 7800X3D and 3080 Ti.
Another community member who goes by Passchen has quite a bit of passion for his NFC builds. While he initially went with an NCASE M1 back in the GTX 1080 days, he soon wanted a smaller footprint and went with a Skyreach 4 Mini. The build that stuck out to me the most is his S4T-L. It houses a watercooled and shunt-modded A4000 along with a 13600K. An Alphacool DC-LT 2 and ST30 140mm cools this svelte beast. The bezel is a masterpiece by Erick of NFC. The same person responsible for my purpleheart meteorite bezel. In Passchen’s own words
> I wanted to get a really custom bezel made by Erick since it's such a special case. So, after I bought it I reached out to NFC with a sketch I had made, literally in crayon because that's what the kids left out, of a bezel that incorporated elements normally found in a boutique guitar. Heavily figured wood, pearl inlays, and the traditional F-hole were all elements I incorporated into the design. For the inlay I took inspiration from several different designs including a dove, an olive branch, and a Baroque monstrance. Erick did the rest and I think the result is incredible. Not only does it showcase Erick's talent but it also turns the S4T-L into a true heirloom piece which I believe is irreplaceable.
Unique and special builds like this are plentiful among the NFC community.
## Future fortification of this workstation
Since this is my work PC, I don’t plan to mess with its seamlessly functional formula too much. From a software standpoint, much of my Fedora KDE Plasma interactions are covered in my Linux migration and one-year follow up pieces.
For hardware, I will likely change bezels a few times. Josh is always finding new types of wood and composites to work with, and Erick is always ready to tackle a masterpiece from even the smallest idea. Cooling may be something I continue to explore. I recently picked up a ZCooi Mod CNC 4070 fan, which uses the same Nidec fan found in the Founder’s Edition Nvidia 4070. The fan is then mounted to a custom CNC metal housing. Cooling potential is immense since the fan allows high RPM while remaining stable. I’ll see how it does when the community tests it. Noctua also announced its next generation NH-L12. While they tend to take their time perfecting designs, they did indicate to me that the interest in this cooler is going to make them work a bit faster.
For now, tinkering will take a backseat to actually _using_ Pegasus to fly through my workflow. Given the results of this build, I may toy with the idea of de-shrouding the 9070 XT Hellhound in Togami next.
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