# Power Supply Unit Chieftec GPB-400S 400W

**URL:** https://aio.lv/en/product--chieftec-gpb-400s--341641
**Data updated:** 2025-12-28 21:15 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** CHIEFTEC
**Manufacturer code:** GPB-400S
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-gpb-400s--341641

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Chieftec GPB-400S is a reliable 400W power supply unit designed for PCs. It features a 20+4 pin ATX motherboard connector, operates on an AC input voltage of 200-240V, and has a frequency range of 47-63Hz. With a non-modular cabling type and a single 12 cm fan for cooling, this PSU ensures efficient power delivery. Its compact dimensions (150mm x 140mm x 87mm) and silver color make it a suitable choice for various PC builds.

## Long description

The Chieftec GPB-400S 400W is a fixed 230V desktop power supply unit designed for reliable everyday PC use. It delivers 400 W of total power with an 85% efficiency rating, a standard 20+4 pin ATX motherboard connector and a single 120 mm cooling fan. The compact silver housing (150 × 140 × 87 mm) and non-modular cabling make it suitable for straightforward system builds where cost-efficiency and dependable power delivery are priorities.
Advantages
The GPB-400S combines a modern PCB design with quality components to provide stable output while maintaining a competitive price. Its 85% efficiency supports reasonable energy use, and the fixed 230V operation with wide frequency compatibility (47–63 Hz) suits standard European mains. The included 120 mm fan ensures consistent cooling and the compact form factor fits most standard enclosures.
Suitable for
 Office and home PCs with modest power demands
 System builds requiring a compact, budget-friendly PSU
 Upgrades of older desktops needing a reliable 400W supply
Key specifications
 Total power: 400 W
 Efficiency: 85%
 Motherboard connector: 20+4 pin ATX
 Input voltage: 200–240 V (fixed @230V)
 Frequency range: 47–63 Hz
 Cabling type: Non-modular
 Fan diameter: 120 mm
 Dimensions: 150 × 140 × 87 mm
 Colour: Silver
How to use
Install the Chieftec GPB-400S into a compatible ATX case and secure it with the supplied screws. Connect the 20+4 pin ATX connector to the motherboard and attach necessary peripheral and drive connectors according to your system layout. Ensure the mains input matches the fixed 230V specification and that the case provides adequate airflow for the 120 mm fan to operate effectively.
Usage recommendations
Use the GPB-400S in systems whose total component power draw stays well below 400 W to preserve longevity and stability. Keep the PSU and case vents free of dust, and confirm that your build’s connectors are compatible with the non-modular cabling before purchase.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 400 W |
| Efficiency | 85 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Over voltage, Overload, Short circuit, Under voltage |
| Power factor | 0.9 |
| Combined power (+3.3V) | 100 W |
| Combined power (+5V) | 100 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 17 A |
| Max output current (+5V) | 16 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) | 30 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| ATX power connector (20+4 pin) | Yes |
| 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) |
| On/off switch | Yes |
| Product colour | Silver |

### Weight & dimensions

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

### Other features

| Feature | Value |
|---|---|
| Number of SATA connectors | 5 |

### Logistics data

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

## FAQ

### How much does the Power Supply Unit Chieftec GPB-400S cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 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 02.07.2026 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: 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 Power Supply Unit Chieftec GPB-400S?

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/341641/64773118_large.webp