Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White

Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White

Brand Antec

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£107.99

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You save £2.84 (3%)

3 offers at 3 retailers

Listed since 7 April 2026

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Description

850 W 100 - 240 V 50/60 Hz. Motherboard power connector: 20+4 pin ATX. PC ATX 80 PLUS Gold. Active 12 cm. White. Introducing our GSK ATX3.1 power supply, designed with the ultimate performance and stability in mind for the gaming and enthusiast market. With advanced features like ATX 3.1, PCIe 5.1, high-quality JP capacitors, unparalleled stability, and 80 PLUS® Gold-certified efficiencies, you can expect brilliant performance from your system. The PhaseWave™ Design ensures steady power output, while the 120mm FDB Silent Fan offers quiet cooling. The power supply is also 100% modular, allowing for easy cable management and customization. The Zero RPM Manager enables advanced thermal control, ensuring the optimal balance between silent operation and efficient cooling. The CircuitShield™ suite of industrial-grade protections provides safe and reliable power delivery in any environment. The GSK ATX3.1 is the perfect choice for building a reliable and efficient PC system for gamers and professionals alike.. ATX 3.1 & PCIe 5.1 Compatible. Our new GSK ATX3.1 power supplies are formally certified for ATX 3.1 compliance, meeting the high standards for reliability and power efficiency, and ensuring the utmost level of quality and performance. The included PCIe 5.1 12V-2x6 GPU cable enables seamless compatibility with the latest graphics cards, such as the NVIDIA® GeForce RTX™ 40 Series.. High-Quality JP Capacitors. Equipped with high-quality JP capacitors, our power supplies achieve unprecedented tight voltage regulation and minimal ripple and noise, maximizing your system's performance.. PhaseWavetm Design. Introducing our PhaseWavetm Design, a server-class LLC design featuring synchronous rectification based on a DC-DC topology. This design ensures unparalleled power delivery efficiency and stability for your system.. CircuitShieldTM. The full suite of industrial-grade protections includes OCP, OVP, UVP, SCP, OPP, OTP, SIP, and NLO, ensuring the safety and reliability of your power supply in any situation.. 120mm FDB Silent Fan. The whisper-quiet, 120mm fluid-dynamic bearing (FDB) fan provides high airflow with the durability and longevity that is a signature of Antec quality.. Zero RPM Manager. With the Zero RPM fan mode, our PSU ensures a longer lifespan and quieter o peration. The thermal sensors activate the fan only when necessary, providing optimal cooling while minimizing noise levels.. Full Modular Cable Management. Allows users to use only the necessary cables and eliminates excess cables that can obstruct and reduce airflow for improved cooling performance.. Compact Size. Compared to large power supplies on the market, it is smaller in size and can be used with a wider range of computer cases.. Power. Power protection features. No load operation, Over current, Over power, Over voltage, Short circuit, Surge & inrush protection (SIP), Under voltage. Max output current (+5Vsb). 3 A. Max output current (-12V). 0.3 A. Max output current (+5V). 20 A. Max output current (+12V). 70.8 A. Max output current (+3.3V). 20 A. Combined power (+5Vsb). 15 W. Combined power (-12V). 3.6 W. Combined power (+5V). 100 W. Combined power (+12V). 849.6 W. Combined power (+3.3V). 100 W. Power Factor Correction (PFC) type. Active. Input current. 10 A. AC input frequency. 50/60 Hz. AC input voltage. 100 - 240 V. Total power. 850 W. Ports & interfaces. Cabling type. Fully-Modular. ATX power connector (20+4 pin). Yes. CPU power connector (4+4 pin). Yes. PCI Express power connectors (12+4 pin) cable length. 600 mm. PCI Express power connectors (12+4 pin). 1. PCI Express power connectors (6+2 pin). 4. Peripheral (Molex) power cable length. 500,650,800,950 mm. Peripheral (Molex) power connectors (4-pin). 4. SATA power cable length. 500,650,800,950 mm. Number of SATA power connectors. 8. Motherboard power cable length. 60 cm. Motherboard power connector. 20+4 pin ATX. Performance. Silent mode. Yes. ATX version. 3.1. 80 PLUS certification. 80 PLUS Gold. Power supply unit (PSU) form factor. ATX. Purpose. PC. Design. On/off switch. Yes. Fan location. Top. Number of fans. 1 fan(s). Fan diameter. 12 cm. Cooling type. Active. Product colour. White. Operational conditions. Operating temperature (T-T). 0 - 40 °C. Certificates. Certification. cTUVus / TUV / CB / RCM / CE / FCC / BSMI / KC/ UKCA / ICES. Weight & dimensions. Weight. 2.62 kg. Height. 86 mm. Depth. 140 mm. Width. 150 mm. Packaging data. Package type. Box. Package weight. 2.84 kg. Package height. 130 mm. Package depth. 296 mm. Package width. 203 mm

Full specifications

Marque Antec
Référence fabricant 0761345200936
EAN 0761345200936

The Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White in its market context in 2026

In the Informatique category, the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White by Antec stands out for its positioning in 2026. Compiral lists all available offers to help you buy at the best price. Our comparison tool takes delivery costs into account to calculate the true total price of each offer. Filter by stock availability, free delivery, or sort by ascending price to find the best deal right now.

Antec: what this model offers

What buyers remember about the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White: consistent quality, intuitive use and a price that stays within market norms for this level of performance. The positioning of Antec on the Informatique segment ensures access to spare parts and a structured after-sales service, which matters greatly in the long run. A solid choice in 2026, whether for a new purchase or to replace a failing device. Also discover the Antec VSK3000B-U3/U2 Mini Tower Black from the same brand for a second level of comparison.

The strengths that really make a difference

What truly differentiates the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White from other products in the Informatique category comes down to a few concrete points: the build quality typical of Antec, its availability from many retailers and accessible after-sales support. These criteria, often decisive for buyers, favour this model over alternatives on the market in 2026. Compare with the Antec FLUX SE Midi Tower Black, Wood if you wish to explore other models from the brand.

What you need to know before buying

Before buying the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White, check the following points: stock availability at your chosen retailer, the returns policy, warranty period and delivery charges. These details are accessible from our offers table at the top of this page. Antec generally offers a well-structured after-sales network for the Informatique category.

Market price ranges in 2026

RangeIndicative price
Entry-levelUnder 384300 £
Mid-range384300 £ to 896710 £
High-endOver 896710 £

Comparing prices before buying the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White can save you between £10 and £40 depending on the retailer and the time of year. Use Compiral to never overpay for your online purchases. The 3 offers listed on this page all come from verified retailers with sales conditions compliant with consumer protection law.

Frequently asked questions about Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White

Is there a refurbished version of the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White?

Refurbished versions of the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White may be available from certain Compiral partner retailers. These refurbished products allow you to save between 20% and 40% compared to the new price while still benefiting from a warranty. Check availability in our offers table and review the warranty conditions offered by the retailer.

When do prices for the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White drop during the year?

Prices for the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White typically drop during Black Friday (November), the January sales and the summer sales (July). Promotional deals are also common around Cyber Monday and the holiday season. Our price history lets you spot trends and assess whether a price drop is likely soon in the Informatique category.

Is delivery free for the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White at all retailers?

Free delivery is not guaranteed for the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White at every retailer. Some include it in their price, others charge separately. On Compiral, use the free delivery filter to display only offers with free postage. The total price shown in our table always includes delivery costs for a true cost comparison.

How do I return the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White if I am not satisfied?

You have a 14-day right of withdrawal for any online purchase, applicable to the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White regardless of the retailer. Precise return conditions vary by retailer: check their returns policy before buying. Statutory consumer rights protect you in the event of a defect discovered after delivery.

Is the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White worth its price in 2026?

In 2026, the Antec GSK ATX3.1 power supply unit 850 W 20+4 pin ATX ATX White is listed from £107.99 at our partner retailers. This price is consistent with the positioning of Antec in the Informatique category. To judge whether this price is currently attractive, check the price history on our product page. Also compare the total price including delivery to avoid any surprises at checkout.

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