# Power supply lian li SX Series 850W 80 PLUS Platinum fully modular PCIe 5.1 ATX 3.1

**URL:** https://aio.lv/en/product--lian-li-g9psx0850pb000eu--11670116
**Data updated:** 2026-02-16 07:06 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** lian li
**Manufacturer code:** G9P.SX0850P.B000.EU
**EAN:** 4718466020901
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 138.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 114.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lian-li-g9psx0850pb000eu--11670116

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

ATX power supply from lian li SX Series with 850 watts output, 80 PLUS Platinum efficiency rating, fully modular cabling and support for PCIe 5.1 and ATX 3.1 standards. Designed for high-performance desktop PCs and gaming rigs, it provides stable power delivery, improved efficiency and simplified cable management. Suitable for demanding systems and upgrades.

## Long description

The lian li SX Series 850W 80 PLUS Platinum fully modular power supply combines high-efficiency performance with modern compatibility for contemporary desktop systems. Delivering up to 850 watts of continuous power, this ATX 3.1 unit supports PCIe 5.1 graphics power requirements and is built to provide stable voltage rails, improved energy efficiency and tidy cable routing through a fully modular connector layout. It is intended for use in high-performance PCs and gaming rigs where reliable power delivery and compliance with the latest interface standards are required.
Advantages
This power supply offers an 80 PLUS Platinum efficiency rating to reduce wasted energy and lower system heat under typical loads. Full modularity simplifies installation and cable management by allowing only required cables to be connected, improving airflow inside the chassis. Native support for ATX 3.1 and PCIe 5.1 ensures compatibility with modern motherboards and next-generation graphics cards, while robust power delivery design maintains stable output for demanding components.
Suitable for
High-performance gaming PCs with modern graphics cards
Workstations for video editing, 3D rendering, and content creation
System upgrades that require PCIe 5.1 and ATX 3.1 compatibility
Compact builds that need efficient power delivery and modular cabling
Key specifications
Output power: 850 W continuous
Efficiency certification: 80 PLUS Platinum
Cabling: fully modular connector system
Standards supported: ATX 3.1 and PCIe 5.1 compatibility
Cooling: integrated fan with thermal management (model-dependent fan control)
Form factor: ATX (standard desktop power supply)
How to use
Install the power supply into an ATX-compatible case following the chassis manufacturers instructions, secure it with the provided screws and connect the required modular cables to the motherboard, CPU power input and graphics card. Ensure that PCIe 5.1 power connectors are used where the graphics card requires them, and route cables to avoid obstructing airflow. Verify all connections before powering on the system and monitor voltages and temperatures during the initial boot and stress testing to confirm stable operation.
Usage recommendations
For optimal reliability, pair the unit with components that match its power capacity and efficiency class, maintain adequate case airflow, and use the included modular cables rather than third-party adapters. Regularly check for firmware or BIOS updates from the system or motherboard manufacturer to ensure full compatibility with ATX 3.1 and PCIe 5.1 features.

## FAQ

### How much does the lian li SX Series 850W 80 PLUS Platinum PSU cost, and is it available for purchase?

The price is 138.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 108 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 28.07.2026 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: 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

## Image

https://aio.lv/img/cache/product/11670116/68546601_large.webp