# Power Supply Unit Silverstone GM400 800 W

**URL:** https://aio.lv/en/product--silverstone-sst-gm400-1ub--7466568
**Data updated:** 2026-03-07 15:17 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** SILVERSTONE
**Manufacturer code:** SST-GM400-1UB
**EAN:** 4710679815015
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 768.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 635.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--silverstone-sst-gm400-1ub--7466568

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Silverstone GM400 1U power supply unit delivers 800 W of power with a 20+4 pin ATX connector. It operates on an AC input voltage of 90 - 264 V and a frequency of 47 - 63 Hz. Designed for server use, it features 80 PLUS Silver certification for energy efficiency. The active cooling system with a 4 cm fan ensures optimal performance. Dimensions are 123 mm (W) x 270 mm (D) x 41.5 mm (H).

## Long description

The Silverstone GM400 1U power supply unit provides a continuous 800 W output in a compact 1U server form factor. Built for rack and small‑form server applications, it accepts an AC input voltage range of 90–264 V at 47–63 Hz and delivers power through a 20+4 pin ATX motherboard connector. The PSU carries an 80 PLUS Silver efficiency rating and uses an active cooling system with a 40 mm fan. Its metal chassis in silver finish measures 123 mm (W) x 270 mm (D) x 41.5 mm (H) and weighs 2.15 kg.
Advantages
The Silverstone GM400 combines high output with a slim 1U profile, enabling deployment in space‑constrained server racks and compact chassis. The 80 PLUS Silver certification indicates reduced energy losses compared with standard units, while the active fan cooling maintains thermal stability during continuous operation. The 20+4 pin ATX connector ensures compatibility with a wide range of motherboards, and the robust metal housing provides mechanical reliability for server environments.
Suitable for
 1U rack servers and compact server chassis
 Network appliances and storage systems requiring continuous 24/7 power
 Workstations or small servers where space and efficient cooling are critical
Key specifications
 Total output power: 800 W
 Efficiency: 89% (80 PLUS Silver)
 AC input voltage: 90–264 V
 Input frequency: 47–63 Hz
 Motherboard connector: 20+4 pin ATX
 Cooling: active, 40 mm fan
 Dimensions (W x D x H): 123 x 270 x 41.5 mm
 Weight: 2.15 kg
 Colour: silver
How to use
Install the Silverstone GM400 into a compatible 1U bay or compact chassis following your chassis manufacturer’s instructions. Connect the AC input to a properly rated mains outlet or power distribution unit, then attach the 20+4 pin ATX connector to the motherboard power socket. Ensure adequate airflow around the PSU intake and exhaust to allow the 40 mm fan to maintain cooling. Verify voltage range and grounding before powering on.
Usage recommendations
For reliable operation, use the PSU in environments within the specified AC range and ambient temperatures appropriate for server equipment. Maintain clear airflow paths and dust‑free intake areas; schedule periodic visual inspections of the fan and connectors. When deploying in racks, use compatible mounting hardware and follow cooling and power distribution best practices.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 800 W |
| Efficiency | 89 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Over current, Over power, Over voltage, Short circuit |
| Power factor | 0.9 |
| Combined power (+3.3V) | 160 W |
| Combined power (+12V) | 800 W |
| Combined power (+5V) | 160 W |
| Max output current (+3.3V) | 24 A |
| Max output current (+5V) | 24 A |
| Max output current (-12V) | 0.8 A |
| Max output current (+5Vsb) | 3.5 A |
| AC input frequency | 47 - 63 |
| AC input voltage | 90 - 264 |
| Max output current (+12V1) | 32 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Floppy disk drive connector | Yes |
| PCI Express connector | Yes |
| PCI Express power connectors (6-pin) | 2 |
| Floppy drive power connector | 2 |
| Number of SATA power connectors | 4 |
| Peripheral (Molex) power connectors (4-pin) | 8 |
| EPS power connector (8-pin) | Yes |
| Cabling type | Non-Modular |
| Motherboard power cable length | 500 mm |
| SATA power cable length | 500, 150 |
| Peripheral (Molex) power cable length | 500, 150 |
| PCI Express power cable length | 500 mm |

### Performance

| Feature | Value |
|---|---|
| Purpose | Server |
| 80 PLUS certification | 80 PLUS Silver |
| Mean time between failures (MTBF) | 100000 h |
| Noise level | 52 dB |
| Power supply unit (PSU) form factor | 1U |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 40 mm |
| Number of fans | 2 fan(s) |
| Cooling type | Active |
| Fan location | Side |
| On/off switch | Yes |
| Product colour | Silver |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 2.15 kg |
| Height | 41.5 mm |
| Width | 123 mm |
| Depth | 270 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 40 |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Box |

## FAQ

### How much does the Power Supply Unit Silverstone GM400 cost, and is it available for purchase?

The price is 768.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 16.07.2026 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, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Power Supply Unit Silverstone GM400 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 SILVERSTONE 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 SILVERSTONE 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, 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.

### Where can I download the instructions for Power Supply Unit Silverstone GM400?

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/7466568/64806595_large.webp