Specifications- SFX850
| Product Launch 2026 | NCASE SFX850SFF Kit |
| Model & Variant | NCASE SFX850 (SFF Kit / MFF Kit) |
| Overview |
The NCASE SFX850 is an 850W, fully modular SFX power supply engineered specifically for the practical challenges of small-form-factor PC building—combining compact dimensions, ultra-soft modular cables, and independently verified efficiency. Fully compliant with Intel's ATX 3.1 power standard and equipped with a native PCIe 5.1 (12V-2x6) 600W GPU connection, the SFX850 delivers reliable power for modern high-performance graphics cards while preserving valuable interior space in compact enclosures. Featuring gold-plated connector terminals, 105°C-rated Japanese capacitors, and a 92mm fluid dynamic bearing fan with semi-passive Zero-RPM operation, it integrates seamlessly into the FormD T1, NCASE M Series, S5M, and standard SFX builds. |
| Form Factor | Standard SFX (Includes SFX-to-ATX Power Bracket Adapter) |
| ATX / PCIe Standard | Intel ATX 3.1 / Native PCIe 5.1 |
| Dimension (WxDxH in mm) | 125 x 100 x 63.5 (SFX standard nominal; 63.85mm height Cybenetics measured) |
| Weight (KG) | 0.96 (PSU body only) |
| Rated Output Power | 850W Continuous (@ 0–45°C Operating Temperature) |
| DC Output Ratings | +12V: 70.8A (850W) +5V & +3.3V: 20A each (100W Combined) +5VSB: 3A (15W) |
| AC Input Rating | 100–240V AC, 10A, 50–60Hz (Universal Input with Active PFC) |
| Efficiency Certification |
Please refer to the Cybenetics Lab Report (#26PS3411A) For More Info 80 PLUS Platinum / Cybenetics Platinum Average Efficiency: 90.21% (115V) / 92.17% (230V) |
| Acoustic Performance |
Please refer to the Cybenetics Lab Report (#26PS3411A) For More Info Cybenetics LAMBDA A- (115V) / LAMBDA A (230V) Average Noise Output: 29.44 dBA (115V) / 26.74 dBA (230V) |
| Cooling System | 92mm Fluid Dynamic Bearing (FDB) Fan Intelligent thermal control with Semi-Passive Zero-RPM mode |
| Modular Design & Materials | Fully Modular with Gold-Plated Connector Terminals Ultra-soft flexible woven cables with tinned-copper conductors |
| Included Cables & Accessories (SFF Kit) | 1 x 24-Pin (20+4) ATX Motherboard Cable (16–20AWG) 1 x 8-Pin (4+4) CPU EPS12V Cable (16AWG) 1 x 12V-2x6 (12+4 Pin) PCIe 5.1 GPU Cable, 600W Rated (16–26AWG) 1 x SFX-to-ATX Power Bracket Adapter 1 x Regional AC Power Cord (C13 Coupler, 18AWG — US / EU / CN & AU) |
| Internal Components | 105°C-Rated Japanese Electrolytic & Polymer Capacitors (Nippon Chemi-Con & Rubycon) Hold-Up Time: 20.30ms (Exceeds ATX 3.1 ≥16ms requirement) |
| Protection Features | OVP (Over Voltage), UVP (Under Voltage), OPP (Over Power) OCP (Over Current), SCP (Short Circuit), OTP (Over Temperature) Surge & Inrush Current Protection |
| Case Compatibility | FormD T1, NCASE M2, NCASE M3, Skyreach 5 MINI (S5M), and all standard SFX / SFX-L / ATX enclosures |
| Warranty | 5-Year Limited Warranty |