# Power supply unit CHIEFTEC GPB-350S 350 W, ATX 2.3, 20+4 pin, 120 mm fan, 85% efficiency

**URL:** https://aio.lv/en/product--chieftec-psu-663--1974367
**Data updated:** 2026-01-21 10:52 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** CHIEFTEC
**Manufacturer code:** PSU-663
**EAN:** 4710713233614
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 36.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 30.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-psu-663--1974367

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

ATX power supply CHIEFTEC GPB-350S provides 350 W total power with 85% efficiency and active PFC. Designed for desktop PCs, it features a 20+4 pin motherboard connector, one 6+2 PCIe connector, three Molex and five SATA connectors. Cooling is via a 120 mm top fan. Input 200–240 V, protections include undervoltage; compact 140×150×87 mm metal housing.

## Long description

The Chieftec GPB-350S 350 W is a compact desktop power supply unit designed for standard ATX systems. It delivers 350 W total power, provides a 20+4 pin ATX motherboard connector and operates from AC 200–240 V at 47–63 Hz. The unit uses a fixed, non-modular cable set and an active cooling solution with a 120 mm fan. Built with modern PCB design and components, it meets RoHS requirements and is offered in resource-efficient bulk packaging.
Advantages
The GPB-350S combines moderate efficiency (85%) with a competitive price and reliable components derived from CHIEFTEC's iARENA design approach. Its fixed 20+4 pin ATX connector ensures compatibility with a wide range of motherboards, while the 120 mm fan supports effective heat dissipation for sustained operation. RoHS compliance and fixed 230 V-ready design simplify deployment in regions with 200–240 V mains.
Suitable for
Office desktop PCs with standard ATX motherboards
Home computers for web browsing, media playback and light productivity
System builders seeking cost-effective, RoHS-compliant PSUs in bulk
Key specifications
Total power: 350 W
Efficiency: 85%
Motherboard connector: 20+4 pin ATX
AC input: 200–240 V, 47–63 Hz
Fan diameter: 120 mm
Product colour: Silver
Modularity: Non-modular cabling
Compliance: RoHS
How to use
Install the Chieftec GPB-350S into a compatible ATX case, secure it with the mounting screws and connect the 20+4 pin ATX cable to the motherboard. Attach any peripheral connectors required by your drives and components. Ensure mains voltage is within 200–240 V before powering on. Maintain unobstructed airflow around the 120 mm fan to allow effective cooling during operation.
Usage recommendations
Use this PSU in systems with modest power requirements up to its 350 W rating, avoid heavy overclocking or high-end graphics card combinations that exceed total output, and keep the interior of the PC free of dust to preserve cooling and component longevity.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 350 W |
| Efficiency | 85 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Over voltage, Under voltage, Short circuit, Overload |
| Power factor | 0.9 |
| Combined power (+3.3V) | 90 W |
| Combined power (+12V) | 312 W |
| Combined power (+5V) | 90 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 16 A |
| Max output current (+5V) | 15 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 3 |
| AC input frequency | 47 - 63 |
| AC input voltage | 200 - 240 |
| Max output current (+12V1) | 26 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 5 |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| PCI Express power connectors (6+2 pin) | 1 |
| Cabling type | Non-Modular |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| ATX version | 2.3 |
| Power supply unit (PSU) form factor | PS/2 |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Fan location | Top |
| On/off switch | Yes |
| Product colour | Silver |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 87 mm |
| Width | 140 mm |
| Depth | 150 mm |

### Packaging data

| Feature | Value |
|---|---|
| Manual | Yes |
| Package type | Box |

### Other features

| Feature | Value |
|---|---|
| Warranty card | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the CHIEFTEC GPB-350S 350 W power supply cost, and is it available for purchase?

The price is 36.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 27 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 29.06.2026 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: 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, efficiency, motherboard power connector, fan diameter, 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.

### Where can I download the instructions for CHIEFTEC GPB-350S 350 W power supply?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/1974367/64780050_large.webp