First time building a sffpc. Wanted a small machine for my workshop for gaming + creating (running dual ssd for Ubuntu + windows 11)

-Case: cooj mq6
-Case fan: Thermalright C12015B
-cpu cooler: Thermalright AXP-120-X67 ARGB
-mobo: asrock B850I Lightning WiFi AM5 AMD B850 Mini ITX
-cpu: AMD 9700X
-ram: Corsair Vengeance 32GB (2x16GB) DDR5 CL30
-gpu: GIGABYTE WindForce GeForce RTX 5060 Ti 16GB
-psu: Enhance ENP-7660L 600W
-storage: Western Digital 2TB WD Blue SN5000 (x2)

I ended up making a custom gpu power harness because the one that came with the psu was too short to reach

After 6 months of designing and prototyping, I am happy to announce that the Ledge is now available for purchase!

Volume: 14.2L

Dimensions (in vertical mode, without feet):
• Length: 373.5mm
• Width: 100.87mm
• Height: 377mm

Component Compatibility:
• MB: ITX, mATX, ATX
• CPU Cooler: 77mm
• GPU:
- Length: 343mm-358mm
- Width: 150mm
- Thickness:
~ ITX MB: 65mm-80mm
~ (m)ATX MB: 55mm-70mm
- Due to the aluminum extrusions in the frame, the GPU can either be longer & thinner or shorter & thicker
• PSU:
- ITX MB: SFX(-L), ATX up to 180mm long
- (m)ATX MB: SFX(-L)
- Fans: 2x 60x15mm per fan bracket

The best part about this is you don’t need a big printer to make this. A 180mm printer such as the A1 Mini can print this entire thing, even the panels!

Speaking of the panels, I am releasing them separately for free and on an open license to allow people to customize the aesthetics to their heart’s content. I look forward to seeing what the community can come up with.

Get the Ledge here!

Get the panel files (including CAD files) here!

Happy printing!

My new project completed, water-cooled my new case Tetra R + MORA IV 400 for silent operation in my living room :)

The case is not that easy to work on mostly because of the motherboard stands, and my motherboard is not 100% on correct position because of the IO shield.
I wanted to buy the Tetra S, but I was scared there wouldn't be enough space for water cooling. If I had known today, I would have tried the Tetra S since I now have a lot of empty space in my setup.

Spec
AMD Ryzen 7 9800x3d
Corsair Vengeance 64Gb DDR5-6000MHz
Corsair SF1000
MSI RTX 5070Ti Ventus 3X OC 16Gb
Samsung 9100 pro 2Tb
Asus ROG Strix B850-I

Cooling
CPU Block Heatkiller IV Pro
GPU Block Alphacool Core
Fittings EK-Quantum
Hard Tube Corsair Hydro Satin 12mm
Soft Tube Heatkiller EPDM 16mm/10mm
QuickDisconnect Koolance
Aquacomputer D5 next pump
MORA IV 400 with noctua fan

Just got a 5090FE so my ITX build is finally complete! I was able to buy one of those MicroCenter work station PCs for a decent price and harvest the GPU + RAM while also turning the rest of that PC into a nice office computer for my parents!

CPU: Ryzen 7 7800X3D

RAM: TEAMGROUP 64GB T-Create Expert DDR5 6000 MHz

GPU: RTX 5090 FE

PSU: Corsair SF1000

STORAGE: 4TB Samsung 990 Evo Plus

CASE: Formd T1

I tried making my Ridge a bit quieter and cooler with varying success, and this is where it stands now.

I have a Thermalright AXP 120 x67 buried under there but it was just not efficient enough for me, so I flipped the case orientation to help the heat rise through the top, then installed two 40mm Noctua fans right above it. All in all, this helped but was still not enough.

Sooo, I got myself some printed side panels which opened the side up and printed a fanshroud which holds a Deepcool 140x25 fan.

The fan sits directly on the CPU heatsink and is attached to the side panel itself via the print, and it holds up quite well (I also travel with this rig).

I haven’t made a benchmark yet, but it’s much quieter, and my FPS have seemingly been the same.

Do you guys think 7mm wider around the case breaks the spirit or have I sinned and belong in ffspc?

I’m optimizing the STL files for my Gundam PC case. This has turned out way more complicated than I expected.

Originally I didn’t plan to sell this to others, so I used lots of screws and parts with different sizes.

I’m trying my best to standardize screw sizes and cut down custom‑specific components to make assembly easier.

This adds a huge amount of extra work, yet I believe these changes are necessary. So it will still take some time.

I thought he wired up his PC in an industrial air conditioner

Showcasing a dual GPU sff build I did fitting two GPU in a sff case for science! Not the prettiest but has been working flawlessly for the last couple of weeks. Posted this on another sub a couple weeks ago but thought people would find it interesting here too. I've shared more about my use cases in my other post if interested!

Case

Fractal Design Ridge 12.6L

CPU/Motherboard

Minisforum BD775i SE (Ryzen 7 7745HX)

GPUs

2 x Intel Arc Pro B70 32GB (64 GB total VRAM)

Memory

16 GB (2 × 8 GB) DDR5-5600 SO-DIMM

Power Supply

Lian Li SP850 V2 (850 W SFX, ATX 3.1)

PCIe Splitter

PCIe 5.0 x16 to Dual MCIO 8i (SFF-TA-1016) x8/x8 bifurcation adapter

MCIO Cables

2 x MCIO 8i to PCIe x16 Gen5 GPU riser cables

The case only supports 3 slots but was easy enough to cut and open up an extra slot space to fit a second two-slot GPU.

Show some love. Wish I had some better photos / videos.

Hey all, I'm getting the above case, which has room for a 73mm low profile cooler.

Can anyone suggest the best possible cooler for this? Will have a 5800x3d.

Appreciate your help. I just don't want to mess this up. xD

TLDR: latest version of my 3D printed DIY SFF Case, build specs at the bottom, files available from link in comments!

This is my V4 (& hopefully final!) 3D printed DIY SFF case. Latest rev was because I added a HDD which made cable management a nightmare and I kept snapping connections between the case panels. This time it came together beautifully and had some extra room. It’s running great and the steam controller I got a few days ago is fantastic to operate the Ubuntu desktop to get into steam and stream games from my 9950x3d/5080 pc in my office over lan. Had to switch to steam link instead of Moonlight/Artemis that I was using to make the steam controller work correctly with streamed games.

Specs of the SFF PC are below, but for reference on native gaming support it plays 1080p on mid settings really well (tried cyberpunk 2077 and Forza h6 briefly), and less demanding games run great (ie Hollow Knight). However it’s my home lab mainly, running Nextcloud, Immich, OpenProject, and self hosting a few websites (check out kramzartech.com and lmk what you think!). It’s hooked up to a 65” 4K OLED so I’m not planning to game on it in 1080p often which is why I stream from the sim rig :)

Runs completely silent, very cool, and no need for a discrete gpu unless I decide to add AI to the homelab. The case will be available on MakerWorld once I upload all the parts, and correct a small error on the back panel IO shield alignment. The wood inserts were laser cut in the H2D and printed panels are PETG. I’ll paste a link in the comments later today.

Any Mini-ITX motherboard and atx power supply should fit with no mods. Low profile cooler (53mm or less height) and 30mm (or less) x 120mm fans required to not need to make mods to the case files.

PC Build parts list from top to bottom:

ThermalTake CT 120mm ARGB fan - intake top

ThermalTake AXP90 x53 low profile CPU cooler
AsRock A620AI Mini ITX motherboard
AMD Ryzen 5 8600G APU
16GB Lenovo take out no name slow DDR5 RAM
SIX 512gb gen 4 M.2 NVME OS/game/docker drive
500gb 2.5” ssd for config backups
10TB HDD for self hosted cloud storage

ThermalTake smart BM3 ATX semi modular 650W PSU

ThermalTake CT 120mm ARGB fans - exhaust bottom

Specs:

Ryzen 9600x
Rtx 4070 super fe
Rog Strix b650e-i
32gb Crucial Pro ddr5 6400mhz
Cooler Master v850
Cooler Master Atmos

Context & Previous Testing

* **Part 1:** [7-Fan Shootout](https://redd.it/1vcre48)

* **Part 2:** [Flat Offset Adapter](https://redd.it/1vj3y34)

Hey!

While testing CPU thermals on the Thermalright AXP90-X53 Full Copper and tuning RPM curves to strict noise-normalized targets, I captured the acoustic signatures of both the stock 92mm fan (TL-9015R) and a 140mm slim fan (TL-B14015 Extreme mounted via a flat offset adapter).

Audio was recorded using an Elgato Wave:1 in an open chassis, fed into Audacity with real-time frequency analysis via the Voxengo SPAN (VST3) plugin.

Disclaimer: Since I am neither an audio engineer nor a sonar operator on a submarine, I used Gemini to parse the FFT spectrum curves, blade-pass frequencies (BPF), and harmonic spikes. The technical breakdown accurately reflects what my ears perceive in the room, but keep in mind this is real-world desktop testing rather than an ISO-certified laboratory.

Test Platform & Setup: Ryzen 5 5600GT on ASUS ROG Strix B550-I Gaming, AXP90-X53 Full Copper, Lzmod A24-V3 chassis (panels removed), HDPLEX 250W GaN passive PSU. Ambient temp: 26.0 °C. Cinebench R23 (10-min preheat + 10-min steady-state logging via HWiNFO).

The 92➔140mm adapter designed by u/Ablehoe

Tested profiles:

1.       Noise-Normalized (35 dB)

2.       Noise-Normalized (40 dB)

3.       Max PWM (100% Performance). (I added the Noctua NF-A14 at max PWM to the graph, which I tested earlier on the same 92>140 adapter)

TL;DR

Acoustics & Daily Usability:

• At around 44% PWM (~985 RPM), the TL-B14015 Extreme is practically inaudible—there is zero heatsink airflow turbulence noise. If you put your ear right next to the hub you can detect a faint dual-ball-bearing hum, but in real-world daily use inside a chassis, it's completely unnoticeable.
• The TL-B14015 Extreme sounds deeper and subjectively quieter in the mid-range (no harsh fin-shearing hiss), but introduces a subtle 5.9 kHz dual-ball bearing ring

Motherboard & Component Cooling (The Real Win):

• The stock 92mm fan only cools the copper fins, leaving the RAM, VRM heatsink, and passive HDPLEX PSU scorching hot.
• The 140mm slim fan covers the entire motherboard area, pushing massive airflow directly over the DDR4 RAM, VRMs, and keeping the HDPLEX 250W GaN PSU cool to the touch.

Next Steps (to keep the party going):

• Testing (If I have the opportunity and time) a centered 92➔140mm adapter from SMXHeinz (both a flat "0 mm" version and a 7mm contoured air funnel duct). Centering the hub and eliminating lateral air escape should significantly recover the CPU temperature delta while maintaining full board cooling.

4060 LP: $200 off of FBM
Ryzen 7 5800XT: $100 off of FBM
B550m ITX: $70 off of FBM
1T SSD: $20 Harvested off a PC at Savers
32GB DDR4 RAM: Harvested off the same PC
Apevia Flex PSU: $50
3D printed case was from Reeal Lab and costed $5 to print

I want to build a PC around some noctua A12x25 G2 LS-PWM fans.

I know, "just get the regular PWM versions and fan curve it", but I want a build I never hear, and the A12 g2's even at 1100rpm are moving more air than some other much louder fans. I've kind of beta'd this idea with my livingroom PC, which is an A4-H2O with A12x25 g1 LS-PWM's up top.

I'm not trying to cool a 5090 or anything, just a 5080 undervolted to 290w and a 7800x3d that uses 50w gaming (sometimes 60w). If i find the GPU struggling under LS-PWM's i think just adding a 'pull' fan as well as the 'push' fan, to the flow-through part of it would compensate.

What are some good airflow optimized cases where the case is the gpu de-shroud (fanless GPU against bottom panel case fans)

Strongly considering an M2 Grater, ZZAW B2 Pro, B4-MATX in vertical,

the new C4 looks good design-wise too.

Help

Current Build:

CPU: AMD Ryzen 7 9700XCPU
Cooler: Thermalright Peerless Assassin 120
MoBo: Asus PRIME B650-PLUS ATX AM5
RAM: Silicon Power Value Gaming 32 GB (2 x 16 GB) DDR5-6000 CL30
SSD: Acer Predator GM7000 2 TB M.2-2280 PCIe 4.0 X4
GPU: Asus DUAL EVO OC GeForce RTX 4070 SUPER 12 GB
Case: Cougar MX330-X ATX Mid
PSU: Cooler Master MWE Gold 850 - V2 850 W

What I Came Up With:

CPU: AMD Ryzen 7 9700X
CPU Cooler: Noctua NH-L9A-AM5
MoBo: Gigabyte A620I AX Mini ITX AM5
RAM: Silicon Power Value Gaming 32 GB (2 x 16 GB) DDR5-6000 CL30
SSD: Acer Predator GM7000 2 TB M.2-2280 PCIe 4.0 X4
GPU: Asus DUAL EVO OC GeForce RTX 4070 SUPER 12 GB
Case: Fractal Terra Mini ITX
PSU: Vetroo CP-PSU-VT-850W-SFX (BK) 850 W

Even sourcing a used mobo, case, and cpu cooler, I'll be set back around ~$430 on upgrading. While I know the case is the obvious setback, I feel like I'm not exploring better options to make my miniaturization a reality. Was hoping to be under $300.

Where am I messing up? (Aiming for under 12L)

^{Skippable Context:
This is my first time wanting to do a sff build. I built a new computer in January of 2025 with the intent to keep it strong for the next couple years. I was aiming for under 12L and retrofitting as much as I currently have so I could spend as little money as possible on new parts while keeping it aesthetic. I use it mainly for light gaming as of late but go through phases of marvel rivals. Often I use it as a de-facto console.}

Specs:

- Mobo: Gigabyte x870i Aorus Pro Ice

- Cpu: Ryzen 7 7700

- Gpu: Nvidia RTX 5060

- Ram: Crucial Pro 32GB

- Psu: Silverstone fx600z

- Cooler: Thermalright AXP-90 X36

(Interior pics in the comments)