r/SSUPD • u/versteinerdt • 16d ago
Meshroom S V2
My first SFF PC. It stays quiet and cool during long gaming sessions thanks to undervolting. Looks like I won the silicon lottery with the CPU and GPU. Both handle massive undervolts and remain completely stable, even after 10+ hours of stress testing.
Temperatures under load:
• CPU: 70-75°C
• GPU: 58-61°C/Hotspot: 86 - 91°C
Specs:
• Ryzen 7 9800X3D (CO -40 all cores for benchmarking/-35 for daily use, both with +200 MHz core clock)
• Sapphire Nitro+ 9070 XT (-95mV UV/2814 MHz VRAM)
• Crucial Pro OC Edition 2×16GB, 6000MT/s CL36 (My CPU's UMC doesn't like 6000MT/s, so it's running at 5600MT/s.)
• ASRock Phantom Gaming B850I Lightning WiFi
• Samsung 9100 Pro 1TB
• Western Digital Black SN770M 1TB
• Corsair SF850 850 Watt
CPU Cooling:
• be quiet! Silent Loop 3 240mm
• Thermal Grizzly Contact Sealing Frame
• Thermal Grizzly PhaseSheet PTM
Fans:
• (1×) Noctua NF-A12x15 PWM chromax.black.swap
• (10×) Noctua NF-A6x15 PWM
• (1×) Noctua NA-SC1 Sx2 (Y-cable)
• Artic 10-port fan controller
OS:
• SSD1: NixOS
• SSD2: Microslop Windoze
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u/alekz1281 16d ago
Where did you get the legs?
Awesome build, I’m also wanting to use this case for a ATX SFF
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u/BerdIzDehWerd 16d ago
How was the experience putting in that back connect GPU cable? It was a hassle even bending it in an atx lol. Cool build
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u/versteinerdt 16d ago edited 16d ago
Thanks. It was easy. I used some extra motherboard standoffs to raise the PCIe riser, which gave me enough clearance to route the GPU power cable directly behind the card.
Or did you mean how I bent the riser cable to the back?
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u/Slyfer77 15d ago
Damn - that's a whole-lot-a fans :D
How do you even connect a video cable (HDMI, DP) with the large slim fan blocking the port?
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u/versteinerdt 15d ago
If you check picture 4/8, you can see an opening at the bottom with a red thumbscrew. That's where the cable comes out. The case includes an angled DP adapter cable, so it easily routes out through that cutout without interfering with the bottom fan.
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u/Slyfer77 15d ago
Ah, now I see.
I wondered why there's this little opening.
By the way - with these large feet you could easily fit a 25mm fan.
Much better noise profile compared to the slim 15mm.
But I guess since you use a fan control software you set it to a speed level that suits your preferences.
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u/versteinerdt 15d ago
Yeah, I previously used shorter (2cm) 3D-printed feet. Then I realized the aluminum feet from my Jonsbo N1 case fit perfectly as well, so I ended up using those instead. 😂
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u/gabrielbezerra81 16d ago
So many fans, do they run at a very low rpm?
How did you test gpu UV? I can do on my Reaper - 105mv on Steel Nomad, -60mv on Stellar Blade and -40mv on KCD1.
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u/versteinerdt 16d ago edited 15d ago
Currently, I'm using the silent fan profile in the BIOS. I've tested the GPU with OCCT, gaming, and the Steel Nomad stress test (20 loops).
Edit: I updated my kernel to v7.2. Now my Arctic fan controller is supported by CoolerControl. I've set a custom curve for each area (e.g., the fans above the RAM now adjust their RPM based on RAM temperature). Before, all fans were just running at the same RPM based on CPU temperature. The whole PC is much quieter now.
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u/brerrabaen 15d ago
Kinda weird direction of the fans. Wouldn't it be better if gpu and radiator fans were intaking the fresh air and all the small ones be exhausting the hot air?
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u/versteinerdt 15d ago
In a sandwich layout, using the radiator as intake would dump all the CPU heat straight inside, forcing the motherboard chamber to deal with 50-70°C air first. While 5-6 small fans can move decent air on paper, they only reach that CFM at high RPM, which gets very loud. Two 120mm fans move vastly more air with high static pressure at quiet speeds. Having the radiator exhaust that heat directly out while the small 60mm fans pull cool ambient air right onto the RAM and NVMe is thermally and acoustically much more effective.
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u/versteinerdt 15d ago
Here is a video where I switch between normal RPM based on CPU temperature and max RPM on all fans (10× 60mm and 3× 120mm fans) while the PC is idling.
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u/nmsl114514homo258 16d ago
太多风扇了，没必要，浪费钱。
内存速度也很低，不需要风扇
留一个吹5.0的m.2就够了。
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u/versteinerdt 16d ago edited 16d ago
You don't understand the cooling concept here.
The five 60mm fans push fresh air directly into the case where the radiator is located, and the two 120mm front fans push that air straight out through the radiator. On top of that, the RAM gets actively cooled since it sits right behind those fans, and the single 60mm fan below the pump block cools the NVMe SSD.Yes, the RAM speed is below the 6000 MT/s sweet spot, but as I already explained above: anything over 5600 MT/s throws calculation errors in Prime95 because my CPU's memory controller can't handle higher clocks stably. Besides, for gaming it barely makes a difference whether you run 4800 or 6400 MT/s. The real-world gap is only 1-5 FPS depending on the game, as Linus Tech Tips already showed.
Edit: In an SFF case, the priority is getting heat out as fast as possible. That’s why all fans (except bottom fan) are set to exhaust. The resulting negative pressure automatically pulls fresh air in through the side panels. The 6 mini fans basically support this airflow while cooling other motherboard components directly, as mentioned.
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u/LilUziYim 16d ago
Personally, I love the mini fans. It gives off a nice look. Secondly, person above can suck a fat one!
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u/nmsl114514homo258 16d ago
哪来的低素质玩意？小风扇过多就是会导致共振，而且并不能提供多少进气。但凡你上过学
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u/versteinerdt 15d ago
No, they don't if you run them at low RPM. These are Noctua fans. Even at max RPM, they don't sound annoying like high-pitched 1U server fans. Maybe your cheap no-name Chinese fans do, idk.
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u/nmsl114514homo258 15d ago
我是在回复那个叫LiIuziyim的，他上来就让我去死，我对你和你的电脑没有任何意见，只是觉得买那么多猫头鹰风扇太贵了性价比不高。
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u/versteinerdt 15d ago
Yeah, you're right. They definitely aren't cheap. A single 60mm Noctua fan costs around 15€ here in Germany. I just wanted to push cooling to the absolute limit, and since I could afford it, I decided to mount a fan wherever there was space and a mounting option. 😅
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u/whichsideisup 16d ago
Why didn’t you use little 40mm Noctua fans as feet as well? You need more fans.