[ ATX DESKTOP POWER // IDENTIFIED MODEL ]
NZXT C850 Gold ATX 3.1
The black C850 Gold ATX 3.1 SKU PA-8G2BB-US, distinct from earlier NZXT C850 ATX 2.x and other C-series revisions. Specifications below are manufacturer-source references; the physical unit’s nameplate and matching manual control.
HIGH-VOLTAGE SAFETY: Disconnect AC before external inspection. Never open, probe, or repair a PSU internally; hazardous charge can persist after unplugging. Replace a damaged, wet, burnt, modified or unidentified unit, or use qualified service.
Model-specific specifications
| Manufacturer / exact model | NZXT C850 Gold ATX 3.1; model / SKU PA-8G2BB-US. Match the complete regional suffix, hardware revision and label. |
|---|---|
| Rated capacity | 850 W continuous total output as the manufacturer-rated class; combined rail limits and operating-temperature derating remain model-specific. |
| Efficiency certification | 80 PLUS Gold, listed by the manufacturer for this named model. Certification does not identify an unknown PSU revision or establish used-unit condition. |
| AC input | 100–240 V AC, 50–60 Hz; confirm the exact current rating on the regional nameplate. |
| DC rails | +12 V: 70.83 A (850 W); +3.3 V: 22 A (120 W); +5 V: 22 A (shared with +3.3 V); +12 V: 70.83 A; −12 V: 0.3 A; +5 VSB: 3 A. Confirm combined output and regional limits on the supplied label. |
| Connector set | 24-pin ATX; two CPU/EPS outputs (one 4+4-pin and one 8-pin); three PCIe 6+2-pin; one native 12V-2x6 (16-pin) GPU lead; eight SATA; three peripheral 4-pin. |
| ATX / PCIe revision | ATX 3.1 / PCIe 5.1 generation; native 12V-2x6. |
| Mechanical envelope | 160 × 150 × 86 mm (depth × width × height). Verify mounting holes, fan/grille clearance, cable exit/side-panel clearance and tolerance against the case drawing. |
| Protections | Over-current, over-voltage, under-voltage, over-power, over-temperature and short-circuit protections are listed for the C Gold line; confirm the regional manual for exact codes. Protection labels do not guarantee a safe outcome under a fault; use only a healthy, unmodified unit within its documented ratings. |
Compatibility & revision caveats
- Use the 12V-2x6 cable supplied or explicitly approved for PA-8G2BB-US; connector form alone does not establish cable pinout. Follow the GPU plug seating and bend-clearance directions in NZXT’s documentation.
- Confirm motherboard 24-pin and EPS count/pinout, GPU cable type, total power, rail limits, chassis dimensions, cooling clearance, region and full model suffix before purchase or installation.
- Modular PSU-side pinouts are not standardized. A cable that physically fits is not evidence of electrical compatibility; use only leads explicitly approved for this exact model/revision.
- ATX, ATX12V and PCIe connector revisions describe interfaces, not quality, safety certification or automatic compatibility with every PC component.
Manufacturer product and manual sources
- NZXT C850 Gold ATX 3.1 product pageNZXT’s product listing for the 850 W ATX 3.1 C850 model.
- NZXT C-Series Gold ATX 3.1 product downloadsNZXT support/downloads page for the ATX 3.1 C Gold series manual and documentation.
When a broad product-family page conflicts with a model-specific manual, label or cable table, the exact unit label and corresponding model documentation take precedence.