# Power Supply Unit Cooler Master GX II Gold 850

**URL:** https://aio.lv/en/product--cooler-master-mpx-8503-afag-2ebeu--11464078
**Data updated:** 2025-12-30 21:24 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** Cooler Master
**Manufacturer code:** MPX-8503-AFAG-2EBEU
**EAN:** 4719512150832
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 106.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 88.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cooler-master-mpx-8503-afag-2ebeu--11464078

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The Cooler Master GX II Gold 850 is a high-performance ATX power supply unit with a total power of 850W. It supports AC input voltage of 100-240V and frequency of 50/60Hz. Featuring a 24-pin ATX motherboard connector and SATA power cables of varying lengths, it is ideal for PCs and servers. With 80 PLUS Gold certification, it ensures energy efficiency. The unit is actively cooled with a 12 cm fan and comes in a sleek black design, meeting various compliance standards.

## Long description

The Cooler Master GX II Gold 850 is an 850W ATX power supply designed for reliable, efficient power delivery in desktop PCs and servers. It supports universal AC input (100–240V, 50/60Hz), provides a 24-pin ATX motherboard connector and multiple SATA power cables, and comes in a black finish. The unit is 80 PLUS Gold certified and actively cooled with a 120 mm fan to balance thermal performance and noise control.
Advantages
Built to last, the GX II Gold series adds ATX 3.1 compatibility and a durable 90-degree 12V-2x6 PCIe 5.1 connector capable of supplying up to 600W to a GPU. The PSU achieves over 90% efficiency at typical loads, uses separated thermal domains and a large-quality Japanese capacitor to reduce ripple and enhance reliability, and features a zero-RPM fan mode that keeps the fan off until a set temperature threshold is reached. Fully modular cabling helps reduce clutter and improve airflow.
Suitable for
Gaming and high-performance desktop PCs requiring up to 850W total power
Workstations and home servers that need reliable, efficient power delivery
Systems using modern GPUs that benefit from the 90-degree 12V-2x6 PCIe 5.1 connector
Key specifications
Total power: 850 W
Efficiency: 90% (80 PLUS Gold)
AC input: 100–240 V, 50/60 Hz
Motherboard connector: 24-pin ATX
Fan diameter: 120 mm
Included PCIe connector: 90-degree 12V-2x6 (PCIe 5.1 capable, up to 600W to GPU)
Product colour: Black
Weight: 2.614 kg
How to use
Install the Cooler Master GX II Gold 850 into a compatible ATX case and connect the 24-pin ATX cable to the motherboard. Attach required peripheral and SATA power cables to drives and other components using the modular connectors provided. Use the 90-degree 12V-2x6 PCIe connector when connecting compatible GPUs; ensure the GPU and cables are properly seated. Confirm the AC input switch (if present) and connect to a suitable mains outlet within the specified voltage range.
Usage recommendations
For optimal performance, route modular cables to minimize airflow obstruction inside the case, maintain case ventilation, and monitor system temperatures. Use the PCIe 5.1 12V-2x6 connector for GPUs that require high power delivery and consult your GPU documentation to confirm connector requirements.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 850 W |
| Efficiency | 90 % |
| Power Factor Correction (PFC) type | Active |
| Hold time | 16 ms |
| Power protection features | Under voltage, Surge & inrush, Short circuit, Overheating, Over voltage, Over power, Over current |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 849.6 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.8 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 5 - 10 |
| AC input frequency | 50/60 |
| AC input voltage | 100 - 240 |
| Power Good signal delay range | 100 - 150 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 24-pin ATX |
| Number of SATA power connectors | 6 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| EPS power connector (8-pin) | Yes |
| PCI Express power connectors (6+2 pin) | 4 |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 550 mm |
| SATA power cable length | 620, 740, 860, 500 |
| Peripheral (Molex) power cable length | 860, 500, 620, 740 |
| PCI Express power cable length | 620 mm |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (12+4 pin) | 1 |
| PCI Express power connectors (12+4 pin) cable length | 650 |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC/Server |
| 80 PLUS certification | 80 PLUS Gold |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | HDB |
| ATX version | 3.1 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Fan speed | 0 - 2500 |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Certification | ErP 2014 Lot 3 |
| Compliance certificates | RCM, cTUVus, UKCA, RoHS, KC, Federal Communications Commission (FCC), EAC, China Compulsory Certification (CCC), CCC, BSMI, BIS, CE |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 2.614 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 160 mm |

### Operational conditions

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

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 3004 g |
| Package depth | 320 mm |
| Package height | 125 mm |
| Package width | 195 mm |

### Other features

| Feature | Value |
|---|---|
| EPS cable length | 600 mm |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) cases per pallet | 24 pc(s) |
| Master (outer) case height | 231 mm |
| Master (outer) case width | 335 mm |
| Master (outer) case length | 520 mm |
| Products per master (outer) case | 4 pc(s) |

## FAQ

### How much does the Power Supply Cooler Master GX II Gold cost, and is it available for purchase?

The price is 106.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 244 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 08.07.2026 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 Power Supply Cooler Master GX II Gold 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 Cooler Master 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 Cooler Master 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 Cooler Master GX II Gold?

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/11464078/66129464_large.webp