# Power Supply Unit Chieftec Atmos 850 W

**URL:** https://aio.lv/en/product--chieftec-cpx-850fc--10698597
**Data updated:** 2025-12-30 09:55 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** CHIEFTEC
**Manufacturer code:** CPX-850FC
**EAN:** 753263078407
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 129.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 107.43 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-cpx-850fc--10698597

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The Chieftec Atmos power supply unit delivers a total power of 850 W with an 80 PLUS Gold certification, ensuring high efficiency. It features a 20+4 pin ATX motherboard connector and comes with a 60 cm power cable. The SATA power cables are available in lengths of 550, 650, and 750 mm. Designed for both PC and server applications, it operates on an AC input voltage range of 100 - 240 V and a frequency of 50/60 Hz. The unit is housed in a sleek black casing with a 12 cm fan for optimal cooling. Dimensions: 150 mm (W) x 140 mm (D) x 86 mm (H).

## Long description

The CHIEFTEC ATMOS 850 W power supply unit is built to Intel ATX 3.0 standard and provides up to 850 W of continuous power with 80 PLUS Gold certified efficiency. It supports PCIe Gen5, employs an SRC full-bridge converter with DC-to-DC technology and uses Japanese capacitors for improved stability and longevity. The unit comes in a black housing, measures 150 × 140 × 86 mm, and includes a 120 mm fluid-dynamic bearing (FDB) fan for cooling.
Advantages
The PSU offers high efficiency and stable power delivery with 80 PLUS Gold certification and an SRC full-bridge converter combined with DC-to-DC regulation. Japanese capacitors increase reliability over time. An optimized 120 mm FDB fan balances cooling and low noise, and an ECO fan mode allows near-silent, fanless operation under low loads. Multiple built-in protection circuits safeguard the connected system.
Suitable for
 High-performance desktop PCs with PCIe Gen5 graphics cards
 Workstations and light server applications
 System builds requiring an ATX 3.0 compatible PSU
 Upgrades where efficiency and stable voltages are important
Key specifications
 Total power: 850 W
 Certification: 80 PLUS Gold
 Motherboard connector: 20+4 pin ATX
 Fan diameter: 120 mm FDB
 AC input: 100–240 V, 50/60 Hz
 Casing colour: Black
 Dimensions (W × D × H): 150 × 140 × 86 mm
 Weight: 1.52 kg
How to use
Install the PSU into a compatible ATX case following the motherboard and case manufacturer instructions. Connect the 20+4 pin ATX cable to the motherboard and attach required peripheral cables (SATA, PCIe) to drives and expansion cards. Verify AC input is within 100–240 V and secure the PSU with mounting screws. Ensure adequate airflow around the 120 mm fan and enable ECO fan mode via the unit's settings if available for quieter operation at low loads.
Usage recommendations
For reliable performance, use quality PCIe and SATA cables of the specified lengths, maintain good case airflow, and avoid sustained operation near the maximum load to extend component life. Regularly clean dust from the 120 mm FDB fan and vents to preserve cooling efficiency.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 850 W |
| Power Factor Correction (PFC) type | Active |
| Power factor | 0.9 |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 10-5 |
| AC input frequency | 50/60 |
| AC input voltage | 100 - 240 |
| Max output current (+12V1) | 70.8 A |
| Maximum input current (@110V) | 10 A |
| Maximum input current (@220V) | 5 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 9 |
| ATX power connector (20+4 pin) | Yes |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 600 mm |
| SATA power cable length | 550, 750, 650 |
| CPU power cable length | 600 mm |
| Peripheral (Molex) power cable length | 550, 850, 750, 650 |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (16-pin) | 1 |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC/Server |
| 80 PLUS certification | 80 PLUS Gold |
| ATX version | 3.0 |
| Supported motherboard form factors | ATX |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| On/off switch | Yes |
| Product colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.52 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

## FAQ

### How much does the Power Supply Unit Chieftec Atmos cost, and is it available for purchase?

The price is 129.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 126 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CHIEFTEC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CHIEFTEC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, motherboard power connector, 80 plus certification, fan diameter, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10698597/64811935_large.webp