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Asrock pro-850b 850w atx 3.1 psu 80+ bronze non-modular native 12v-2x6 pcie 5.1 120mm fan black

Product image: Asrock pro-850b 850w atx 3.1 psu 80+ bronze non-modular native 12v-2x6 pcie 5.1 120mm fan black-null
Product image: Asrock pro-850b 850w atx 3.1 psu 80+ bronze non-modular native 12v-2x6 pcie 5.1 120mm fan black-null
Product image: Asrock pro-850b 850w atx 3.1 psu 80+ bronze non-modular native 12v-2x6 pcie 5.1 120mm fan black-null
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Asrock pro-850b 850w atx 3.1 psu 80+ bronze non-modular native 12v-2x6 pcie 5.1 120mm fan black

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Description

Item No. de23d655-865b-4ced-b70e-f3dc5b461a71
ASRock PRO-850B 850W Power Supply 850W80+ BronzeATX 3.1 / PCIe 5.112V-2x6 The ASRock PRO-850B is an 850 watt ATX power supply that brings modern-GPU compatibility to value and mainstream gaming builds. Supplied under part number 90-UXR085-BNEAA2, it is ATX 3.1 and PCIe 5.1 ready with a native 12V-2x6 connector for the latest graphics cards, and pairs 80 PLUS Bronze efficiency with all-Taiwanese capacitors and ASRock Classic Green connectors for easy, reliable installation. Typically in stock wi

Details

ASRock PRO-850B 850W Power Supply

850W80+ BronzeATX 3.1 / PCIe 5.112V-2x6

The ASRock PRO-850B is an 850 watt ATX power supply that brings modern-GPU compatibility to value and mainstream gaming builds. Supplied under part number 90-UXR085-BNEAA2, it is ATX 3.1 and PCIe 5.1 ready with a native 12V-2x6 connector for the latest graphics cards, and pairs 80 PLUS Bronze efficiency with all-Taiwanese capacitors and ASRock Classic Green connectors for easy, reliable installation. Typically in stock with fast delivery across Cyprus.

Before you buy — fit & compatibility
This is a non-modular power supply (fixed cables), so plan for a little extra cable routing. Unlike many budget units it has a native 12V-2x6 cable, so it powers a modern ATX 3.1 / PCIe 5.1 graphics card directly; older cards use the included 8-pin PCIe cables. Its standard ATX size fits most cases.

Best For

✓Budget and mainstream gaming PCs
✓Modern GPU builds on a tight budget
✓Single high-power graphics card systems
✓Office and home workstations
✓First-time ATX 3.1 system builds
✓Reliable everyday all-rounders

Key Features

 
ATX 3.1 · PCIe 5.1 · 12V-2x6
Built to ATX 3.1 with a native 12V-2x6 connector that powers the latest PCIe 5.1 graphics cards directly, plus 200% power-excursion handling for sudden spikes.
 
80+ Bronze Efficiency
Certified 80 PLUS Bronze for solid efficiency under load, helping reduce wasted energy and heat versus non-certified units.
 
Taiwanese Caps · Full Protection
Built with all-Taiwanese capacitors and a comprehensive circuit-protection suite for dependable everyday operation.
 
Classic Green Connectors · 120mm Fan
ASRock Classic Green connectors make it easy to confirm a cable is fully seated, while a 120 mm fan keeps the unit cool and quiet.

Technical Specifications

Identification
Part Number 90-UXR085-BNEAA2
EAN / GTIN 4711581491403
MPN PRO-850B
Power
Maximum OuTPUt 850 W
+12V Rail 70.8 A
Form Factor ATX (ATX 3.1)
Efficiency 80 PLUS Bronze
Power Excursion Up to 200%
Cabling
Modularity Non-modular — fixed cables
GPU Connector Native 12V-2x6 — PCIe 5.1, powers modern GPUs directly
Capacitors All-Taiwanese
Connectors ASRock Classic Green — visual seating confirmation
Cooling
Fan 120 mm
Physical
Colour Black
Warranty
Manufacturer Warranty 3-year limited

Frequently Asked Questions

Does the PRO-850B work with the latest GeForce RTX graphics cards?
Yes. It includes a native 12V-2x6 connector, the PCIe 5.1 power connector used by modern high-end graphics cards, so you can power a current GPU directly without adapters. Traditional PCIe cables are also included for older cards.
Is this power supply modular?
No. The PRO-850B is non-modular, so all cables are permanently attached. This keeps the price low while still offering a native 12V-2x6 cable and 80+ Bronze efficiency.
Is 80 PLUS Bronze efficient enough?
For most mainstream and budget builds, yes. Bronze certification delivers solid efficiency, keeping running costs and heat reasonable. Gold or Platinum units are more efficient but cost more.
What makes this stand out among budget 850W units?
It is one of the more affordable ways to get a native 12V-2x6 / ATX 3.1 cable for a modern graphics card, paired with all-Taiwanese capacitors and ASRock Classic Green connectors that make installation foolproof.
Singular Expert Insight
The PRO-850B is a value pick that gets the important things right: Genuine ATX 3.1 with a native 12V-2x6 cable for a modern GPU, Taiwanese capacitors and a 3-year warranty, all at a budget price. The trade-offs versus pricier units are its fixed cables and 80+ Bronze (rather than Gold) efficiency, so if you want detachable cables or lower long-term running costs, step up to a modular Gold-rated supply. For a budget build centred on the graphics card, it is a sensible, cost-effective choice. Browse our full range of PC power supplies, or pair it with a new graphics card to complete your build.

Buyer’s Guide

Buy it if
You want an affordable 850 W unit that is ATX 3.1 ready with a native 12V-2x6 cable for a modern GPU, and you do not mind fixed cables.
Skip it if
You want detachable modular cables or 80+ Gold efficiency, or you run an extreme overclocked / dual-GPU system that benefits from more headroom.
Also consider
A modular 80+ Gold 850 W unit if efficiency and cable management matter more than price, or a 1000 W model for extra headroom.