# EFFITEK 850W Power Supply Unit, ATX 3.1, PCI 5.1, Silver Efficiency

**URL:** https://aio.lv/en/product--oem-533767--12415143
**Data updated:** 2026-05-12 06:06 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** OEM
**Manufacturer code:** 533767
**EAN:** 4262478810062
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 86.99 €
**Prices and availability valid until:** 2026-08-14 23:59
**Price without VAT (21%):** 71.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-533767--12415143

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The EFFITEK 850W power supply unit is designed for high-performance desktop computers. Featuring ATX 3.1 and PCI 5.1 standards, it ensures stable power delivery and compatibility with modern graphics cards. This Silver-rated PSU provides efficient energy conversion, reliable operation, and essential protection features for demanding gaming or workstation builds.

## Long description

The EFFITEK 850W power supply unit is a high-performance component engineered to meet the rigorous demands of modern desktop computing. Built to comply with the latest ATX 3.1 and PCI 5.1 standards, this unit provides reliable and stable power delivery, ensuring optimal performance for high-end graphics cards and processors. With its Silver efficiency rating, it offers effective energy conversion, reducing waste and heat generation during intensive tasks.
Advantages
This power supply unit stands out due to its advanced compatibility with the latest hardware standards, specifically supporting the high power requirements of modern GPUs through the PCI 5.1 interface. The robust design ensures consistent voltage regulation, which is critical for maintaining system stability during heavy workloads or gaming sessions. Its efficient operation contributes to a cooler and quieter system environment, while the integrated protection features safeguard your valuable components against electrical irregularities.
Suitable for
High-performance gaming PCs
Professional workstations for content creation
Systems utilizing the latest generation of graphics cards
PC builds requiring ATX 3.1 compliance
When it may not be suitable
This unit may not be the ideal choice for ultra-compact small form factor cases where space is extremely limited, as it follows standard ATX dimensions. Additionally, for systems with very low power consumption requirements, an 850W unit may be more capacity than necessary.
Key specifications
Power output: 850W
Standard: ATX 3.1
Interface: PCI 5.1
Efficiency rating: Silver
How to use
Installation should be performed with the computer powered off and disconnected from the mains. Secure the unit into the designated power supply bay of your PC case using the provided screws. Connect the 24-pin motherboard cable, the CPU power cables, and the necessary PCI 5.1 cables to your graphics card. Ensure all connections are firmly seated before reconnecting the power cable to the wall outlet and turning on the system.
What to consider before purchase
Verify that your PC case supports standard ATX power supply dimensions.
Check if your graphics card requires the specific PCI 5.1 power connector.
Ensure the 850W capacity is sufficient for your total system power draw.
Usage recommendations
For optimal longevity and performance, ensure that the power supply intake fan has adequate clearance and is not obstructed by dust or cables. Regularly clean the dust filters of your PC case to maintain efficient airflow.

## FAQ

### How much does the EFFITEK 850W ATX 3.1 PCI 5.1 Power Supply Unit cost, and is it available for purchase?

The price is 86.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 30.07.2026 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 EFFITEK 850W ATX 3.1 PCI 5.1 Power Supply Unit 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 OEM 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 OEM 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