# Power supply Lian Li SX Series 80 PLUS Platinum fully modular PCIe 5.1 ATX 3.1 1200W

**URL:** https://aio.lv/en/product--lian-li-g9psx1200pb000eu--11670120
**Data updated:** 2026-02-16 07:06 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** lian li
**Manufacturer code:** G9P.SX1200P.B000.EU
**EAN:** 4718466021229
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 166.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 138.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lian-li-g9psx1200pb000eu--11670120

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

This Lian Li SX Series power supply is a fully modular 1200W unit compliant with ATX 3.1 and supporting PCIe 5.1. Certified 80 PLUS Platinum, it delivers high-efficiency power for high-end desktops, workstations, and gaming rigs. Modular cabling simplifies installation and cable management while the 1200W capacity supports multi-GPU and high-performance CPU configurations.

## Long description

The Lian Li SX Series 80 PLUS Platinum fully modular 1200W power supply conforms to ATX 3.1 and supports PCIe 5.1, providing a high-efficiency power source for high-end desktops, workstations, and gaming rigs. Designed for systems that require stable and continuous power delivery, this PSU combines platinum-level efficiency with a fully modular cable set to simplify installation and improve airflow inside the chassis.
Advantages
This 1200W unit delivers 80 PLUS Platinum efficiency, reducing wasted energy and lowering heat output compared with lower-efficiency supplies. Full modularity lets you connect only the cables you need, improving cable management and internal airflow. Compliance with ATX 3.1 and support for PCIe 5.1 ensure compatibility with modern motherboards and graphics cards that require updated power delivery standards. The wattage rating supports multi-GPU setups and high-performance CPU configurations.
Suitable for
High-end gaming PCs with discrete graphics cards
Workstations for content creation and 3D rendering
Systems with multi-GPU or power-hungry components
Custom builds where cable management and airflow are priorities
Key specifications
Maximum power: 1200W
Efficiency certification: 80 PLUS Platinum
Form factor compliance: ATX 3.1
PCIe standard support: PCIe 5.1
Cabling: fully modular cable set for selective connection
How to use
Install the PSU into a compatible ATX 3.1 chassis following the motherboard and case manufacturer's instructions. Connect the fully modular cables only to the required components—motherboard 24-pin, CPU power, and PCIe connectors for graphics cards—leaving unused cables disconnected to maintain tidy cable routing and optimal airflow. Ensure the system is powered off and unplugged from mains before making any connections. Verify that connected components do not exceed the unit's total 1200W capacity and that PCIe 5.1 power connectors match the requirements of installed GPUs.
Usage recommendations
For stable operation, allow adequate case ventilation and use appropriate cable routing to avoid obstructing airflow. Regularly check connections and dust levels inside the PC; maintain compliance with ATX 3.1 and PCIe 5.1 requirements when upgrading components.

## FAQ

### How much does the Lian Li SX Series 1200W 80 PLUS Platinum PSU ATX 3.1 cost, and is it available for purchase?

The price is 166.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 81 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 20.07.2026 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. All transactions are 100% secure and encrypted.

### Can Lian Li SX Series 1200W 80 PLUS Platinum PSU ATX 3.1 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 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

## Image

https://aio.lv/img/cache/product/11670120/68538099_large.webp