# Power supply unit Lian Li RS1200G 1200 W 20+4 pin ATX 80 PLUS Gold Black

**URL:** https://aio.lv/en/product--lian-li-g9prs1200gbh00eu--11671188
**Data updated:** 2026-01-04 16:04 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** lian li
**Manufacturer code:** G9P.RS1200G.BH00.EU
**EAN:** 4718466018663
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 153.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 126.85 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lian-li-g9prs1200gbh00eu--11671188

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Lian Li RS1200G is an ATX power supply unit delivering 1200 W total power with a 20+4 pin ATX motherboard connector. It supports 100–240 V AC input at 50/60 Hz and carries an 80 PLUS Gold efficiency rating. The black PSU features a 135 mm cooling fan, single-fan design, standard ATX dimensions and cables with a 62 cm motherboard cable and 500 mm peripheral cables, suitable for high-performance desktop PCs and gaming builds.

## Long description

The Lian Li RS1200G is a 1200 W ATX power supply designed for desktop PCs. It supports 100–240 V AC input at 50/60 Hz and features a 20+4 pin ATX motherboard connector. The PSU is built in a compact 150 × 86 × 150 mm chassis with a 135 mm cooling fan and delivers efficient power with an 80 PLUS Gold certification and Cybenetics Platinum-level real-world efficiency.
Advantages
The RS1200G offers dual installation options and a 90° rotatable AC inlet for flexible mounting and cleaner cable routing in standard or vertical PSU orientations. Its dual-sided 20+4 pin output and ultra-flexible flat cables with magnetic clips simplify cable management, while braided-textured main cable and an included cable comb improve build appearance. Industrial-grade German EPCOS capacitors and a reinforced dual-color 12V-2×6 GPU cable provide stable, long-term performance. An integrated RS Hub supplies additional USB connectivity directly from the PSU, and a protective dust cover is provided for the 18+10 pin output. The unit ships with a full set of modular cables and includes a 10-year warranty for the PSU and a 2-year warranty for the RS Hub.
Suitable for
High-performance gaming PCs and workstations requiring up to 1200 W power
Compact or dual-chamber case builds where space and cable routing are constrained
Systems using next-generation GPUs that require 12V-2×6 power connectors
Key specifications
Total power: 1200 W
AC input: 100–240 V, 50/60 Hz
Certification: 80 PLUS Gold (Cybenetics Platinum-level efficiency)
Motherboard connector: 20+4 pin ATX (dual-sided routing)
Fan: 135 mm, 0–2400 RPM
Form factor and size: ATX, 150 × 86 × 150 mm
Color: Black
Included connectivity: RS Hub with USB Type-A and USB-to-USB cables
Capacitors: German EPCOS industrial-grade
Warranty: 10 years (PSU), 2 years (RS Hub)
How to use
Install the RS1200G into your case in the preferred orientation using either the standard or side-mount option. Rotate the AC inlet if needed to match the case layout and route the 20+4 pin motherboard cable from the side that provides the cleanest path. Connect the dual-color 12V-2×6 cables to compatible GPU power ports and secure modular cables as required. Use the RS Hub to route USB connections from the PSU rather than the motherboard when desired. Reconfirm all connections before powering on and ensure the PSU fan intake is unobstructed for proper cooling.
Usage recommendations
For optimal stability and cable management, plan cable routing before installation, use the provided magnetic clips to shorten excess flat cables, and choose the AC inlet orientation that minimizes bends in power cords. Verify GPU connector compatibility with the RS1200G native 12V-2×6 terminals and keep ventilation paths clear to maintain low noise and temperatures.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 1200 W |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Under voltage, Under temperature, Surge & inrush protection (SIP), Short circuit, Over voltage, Over power, Over current, No load operation |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 1200 W |
| Combined power (+5V) | 100 W |
| Combined power (+5Vsb) | 100 W |
| Input current | 8 - 15 |
| AC input frequency | 50/60 |
| AC input voltage | 100 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Peripheral (Molex) power connectors (4-pin) | 4 |
| ATX power connector (20+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 620 mm |
| CPU power cable length | 700 mm |
| Peripheral (Molex) power cable length | 500 |
| PCI Express power cable length | 650 mm |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Gold |
| Mean time between failures (MTBF) | 100000 h |
| Noise level | 36.27 dB |
| Bearing technology | FDB |
| ATX version | 3.1 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 135 mm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 2400 |
| Product colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 150 mm |
| Width | 86 mm |
| Depth | 150 mm |

### Operational conditions

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

## FAQ

### How much does the Lian Li RS1200G PSU 1200 W cost, and is it available for purchase?

The price is 153.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 329 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 10.08.2026 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 lian li 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 lian li 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, 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 Lian Li RS1200G PSU 1200 W?

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/11671188/66977205_large.webp