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Chieftec atmos cpx-850fc 850w atx 3.1 fully modular power supply 80 plus gold pcie 5.0 12vhpwr black
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Description
Item No.
45760b20-202c-434a-9e46-0f9095cc32cd
Chieftec Atmos CPX-850FC 850W ATX 3.1 Power Supply
850W80 Plus GoldPCIe 5.0 / 16-pinECO Fanless
The Chieftec Atmos CPX-850FC is a 850W fully modular ATX 3.1 power supply with 80 Plus Gold efficiency, built for high-end gaming PCs running PCIe 5.0 graphics cards. It carries part number CPX-850FC (EAN 0753263078407) and includes a native 16-pin (12VHPWR) cable that delivers up to 600W directly to the GPU. Built with an SRC full-bridge converter, DC-to-DC technology and Japanese capacitors for sta
Details
Chieftec Atmos CPX-850FC 850W ATX 3.1 Power Supply
850W80 Plus GoldPCIe 5.0 / 16-pinECO Fanless
The Chieftec Atmos CPX-850FC is a 850W fully modular ATX 3.1 power supply with 80 Plus Gold efficiency, built for high-end gaming PCs running PCIe 5.0 graphics cards. It carries part number CPX-850FC (EAN 0753263078407) and includes a native 16-pin (12VHPWR) cable that delivers up to 600W directly to the GPU. Built with an SRC full-bridge converter, DC-to-DC technology and Japanese capacitors for stability and longevity, it pairs a quiet 120mm fluid-dynamic-bearing fan with an ECO mode for fanless operation at low loads. Typically in stock with fast delivery across Cyprus.
Compatibility & installation
Built to the Intel ATX 12V 3.1 standard with a native 16-pin (12VHPWR / PCIe Gen 5) cable rated to 600W — plug it fully in until it clicks; for RTX 40/50-series cards this connects directly with no adapter, and older cards use the two 8-pin (6+2) PCIe leads. Two 8-pin (4+4) EPS connectors cover modern motherboards. Fits any case taking a standard ATX PSU at a compact 140 mm depth (140 × 150 × 86 mm). It is fully modular — attach only the cables you need; use only the Chieftec-supplied modular cables.
Best For
✓High-end gaming builds with RTX 40/50-series or Radeon GPUs
✓Value buyers wanting ATX 3.1 + native 16-pin
✓Quiet builds — ECO fanless mode at low load
✓Compact cases — 140 mm short depth
✓Clean wiring — fully modular cables
✓Reliability seekers (Japanese capacitors)
Key Features
ATX 3.1 & Native 16-pin
Ships with a native 16-pin (12VHPWR) PCIe Gen 5 cable feeding up to 600W straight to a modern graphics card, with no adapter needed.
80 Plus Gold Efficiency
Certified 80 Plus Gold for high efficiency, meaning less wasted heat, lower running costs and a cooler, quieter system.
SRC Full-Bridge + Japanese Caps
An SRC full-bridge converter with DC-to-DC technology and 100% Japanese capacitors delivers stable voltage and long-term reliability.
120mm FDB Fan + ECO Mode
A quiet 120mm fluid-dynamic-bearing fan with smart Automatic Fan Control and an ECO mode that stops the fan entirely at low loads for silent operation.
Technical Specifications
| Identification | |
| Part Number | CPX-850FC |
| EAN / GTIN | 0753263078407 |
| MPN | CPX-850FC |
| Brand / Series | Chieftec / Atmos |
| Power | |
| Rated OuTPUt Power | 850W |
| 80 Plus Certification | Gold |
| +12V Rail | Single rail, 70.8A (850W) |
| +3.3V / +5V | 20A / 20A (100W combined) |
| PFC | Active PFC (>0.9) |
| Input | 100–240V, 10–5A, 50–60Hz (full-range) |
| Connectors (fully modular) | |
| Motherboard | 1 × 20+4 pin ATX |
| CPU / EPS | 2 × 8-pin (4+4) |
| PCIe 16-pin (12VHPWR) | 1 — native 600W PCIe Gen 5 |
| PCIe 8-pin (6+2) | 2 |
| SATA | 9 |
| Peripheral (Molex) | 4 |
| Design & Cooling | |
| Form Factor | ATX (ATX 12V 3.1 / PCIe Gen 5) |
| Topology | SRC full-bridge + DC-to-DC |
| Cabling | Fully modular |
| Cooling | 120mm FDB fan — AFC smart control + ECO fanless mode |
| Capacitors | Japanese electrolytic |
| Protection & Physical | |
| Protections | OPP, OTP, OVP, SCP, SIP, UVP, OCP, AFC |
| Dimensions (D×W×H) | 140 × 150 × 86 mm |
| Weight | 1.52 kg |
| Colour | Black |
| Warranty | 5 years |
Frequently Asked Questions
Singular Expert Insight
The Chieftec Atmos CPX-850FC is a well-priced way to get ATX 3.1 with a native 16-pin (12VHPWR) cable: it brings 80 Plus Gold efficiency, Japanese capacitors, an SRC full-bridge design and a silent ECO fan mode in a compact 140 mm body. Note it uses the original 16-pin (12VHPWR) connector rather than the newer 12V-2x6, and carries a 5-year warranty; if you want the updated 12V-2x6 connector or a 10-year warranty, units like the be quiet! Pure Power 13 M or Seasonic Focus GX step up. For value-focused high-end builds, the Atmos is a solid choice. Browse the full range of PC power supplies to compare features and wattages.
Buyer's Guide
Buy it if
You want affordable ATX 3.1 power with a native 16-pin cable, 80 Plus Gold, Japanese caps and a silent ECO fan.
Skip it if
You want the newer 12V-2x6 connector or a 10-year warranty — choose a higher-tier ATX 3.1 unit.
Also consider
The Chieftec Atmos CPX-750FC for lighter builds, or a be quiet! / Seasonic unit for 12V-2x6 and longer warranty.