GIGABYTE UD850GM 850 W ATX PSU 80 PLUS Gold

Name: Power supply GIGABYTE UD850GM 850 GP-UD850GM
Brand: GIGABYTE
SKU: 4503813
Price: 123.99 EUR
Availability: InStock

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Power supply GIGABYTE UD850GM 850 W ATX 80 PLUS Gold, fully-modular, 120 mm fan, 20+4 pin, 4×6+2 PCIe, 8×SATA

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Short description

ATX power supply GIGABYTE UD850GM provides 850 W total power with 80 PLUS Gold efficiency (90%) and active PFC. Fully-modular cabling includes 20+4 pin motherboard, 4×6+2 PCIe, 8 SATA and 3 Molex connectors. Features a 120 mm top-mounted fan, support for 100–240 V AC, hold time 16 ms, MTBF 100,000 h and multiple protections (short circuit).

Available for order: 1 pcs.

Warranty: 2 Years

SKU: 4503813

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2b. Kengaraga str., Riga, Latvia, LV-1063

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From 4.99 € (Weight: 2.55 kg)

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Product information

Description

The GIGABYTE UD850GM is an ATX power supply delivering 850 W of continuous power with 80 PLUS Gold efficiency. Designed for desktop PCs, it features active PFC, fully-modular cabling and a top-mounted 120 mm fan for airflow management. The unit supports a wide input voltage range (100–240 V AC), provides a hold time around 16 ms and is built to meet ATX 2.31 form-factor requirements with a compact footprint.

Advantages

The fully-modular cable system simplifies installation and cable management by allowing only the necessary connectors to be attached. 80 PLUS Gold efficiency (approximately 90%) reduces wasted energy and system heat compared with lower-efficiency models. A single +12V rail capable of delivering the majority of the output (max combined +12V power ~849.6 W) supports high-load components such as modern CPUs and GPUs. The 120 mm top-mounted fan and active cooling design maintain stable operating temperature while the unit includes short-circuit protection and other protections to help safeguard connected components. Compact ATX form factor with a high MTBF (100,000 hours) supports reliable, long-term operation.

Suitable for

High-performance gaming PCs with one or multiple mid- to high-end GPUs
Workstations for content creation, 3D rendering or video editing
PC builds requiring clean cable routing and modular connectivity
Systems that need a reliable, efficient power source with robust +12V output

Key specifications

Total power output: 850 W
Efficiency class: 80 PLUS Gold (≈90% efficiency)
Form factor: ATX (ATX 2.31)
Cooling: 120 mm top-mounted fan, active cooling
Cabling: Fully-modular
Motherboard connector: 20+4 pin ATX
CPU connectors: 4+4 pin (CPU power)
PCIe connectors: 4 × 6+2 pin PCIe
SATA connectors: 8 × SATA power
Peripheral (Molex) connectors: 3 × 4-pin
AC input voltage: 100–240 V, 50–60 Hz
Power factor correction: Active PFC (PF ≈ 0.9)
Hold-up time: 16 ms
Maximum +12V combined power: ~849.6 W; max +12V current: 70.8 A
Dimensions (HxWxD): 86 × 150 × 140 mm
MTBF: 100,000 hours

How to use

Install the PSU into a compatible ATX case following the case manufacturer’s orientation guidelines so the top-mounted fan aligns with the chosen ventilation pattern. Connect the 20+4 pin to the motherboard and the 4+4 CPU power connector to the CPU power header. Attach PCIe 6+2 connectors to graphics cards as required and use the modular SATA and Molex cables for drives and peripherals. Ensure the AC mains cable is rated for your local voltage and that the power switch is set correctly before applying power. Verify all connections are secure and that airflow is not obstructed before first startup.

Usage recommendations

For optimal performance and longevity, use the fully-modular cabling to minimize airflow obstruction and keep cable bundles tidy. Select cable lengths and routing that avoid contact with the fan intake. Ensure your system’s combined component power draw stays within the PSU’s rated 850 W capacity and prioritize the +12V rail distribution for high-draw devices such as GPUs. Maintain case ventilation and perform periodic dust cleaning of the fan and intake areas.

Specifications

Total power:: 850 W
Efficiency:: 90 %
Motherboard power connector:: 20+4 pin ATX
80 PLUS certification:: 80 PLUS Gold
Fan diameter:: 120 mm
Product colour:: Black

All features

Power

Total power:: 850 W
Efficiency:: 90 %
Power Factor Correction (PFC) type:: Active
Hold time:: 16 ms
Power protection features:: Over voltage, Overheating, Short circuit, Under voltage, Over power, Over current
Power factor:: 0.9
Combined power (+3.3V):: 105 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
AC input frequency:: 50 - 60
AC input voltage:: 100 - 240
Maximum input current (@110V):: 12 A
Maximum input current (@220V):: 6 A

Ports & interfaces

Motherboard power connector:: 20+4 pin ATX
Floppy disk drive connector:: Yes
Floppy drive power connector:: 2
Number of SATA power connectors:: 8
Peripheral (Molex) power connectors (4-pin):: 3
ATX power connector (20+4 pin):: Yes
CPU power connector (4+4 pin):: Yes
PCI Express power connectors (6+2 pin):: 4
Cabling type:: Fully-Modular
Motherboard power cable length:: 610 mm
CPU power cable length:: 600 mm

Performance

Purpose:: PC
80 PLUS certification:: 80 PLUS Gold
Mean time between failures (MTBF):: 100000 h
ATX version:: 2.31
Power supply unit (PSU) form factor:: ATX

Design

Fan diameter:: 120 mm
Number of fans:: 1 fan(s)
Cooling type:: Active
Fan location:: Top
On/off switch:: Yes
Product colour:: Black

Weight & dimensions

Height:: 86 mm
Width:: 150 mm
Depth:: 140 mm

Packaging data

Package type:: Box

Logistics data

Harmonized System (HS) code:: 84733020

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Instructions

gigabyte-GP-UD850GM-4503813.pdf

Description

Instructions

gigabyte-GP-UD850GM-4503813.pdf

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Customer questions

FAQ

How much does the GIGABYTE UD850GM 850 W ATX PSU 80 PLUS Gold cost, and is it available for purchase?

The price is 123.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 10.07.2026 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 GIGABYTE UD850GM 850 W ATX PSU 80 PLUS Gold be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the GIGABYTE UD850GM 850 W ATX PSU 80 PLUS Gold online, and the application process is as simple as possible:

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For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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 GIGABYTE 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 GIGABYTE 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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, 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 GIGABYTE UD850GM 850 W ATX PSU 80 PLUS 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.

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