850W ATX3.1 Power Supply — 80Plus Gold/Platinum, Full-Modular

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850W Power Supply with ATX3.1/PCIE5.1 & 80Plus Gold/Platinum

Our 850w power supply is a hot product with full-modular design, 80Plus Gold/Platinum certification and ATX3.1/PCIE5.1 compatibility. Equipped with 12VHPWR/PCI-E/CPU ports, it passes 30+ strict tests and international certifications. Perfect for high-end gaming PCs and heavy-load workstations, with 20+ years R&D experience and OEM/ODM service available.
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Advantages of the product

ATX3.1 & PCIE5.1 Standard Support

Our 850W power supply fully supports ATX3.1 and PCIE5.1 industry standards, equipped with 12VHPWR high-power ports, which can meet the extreme power demand of the latest generation of high-end gaming GPUs, and adapt to the future hardware upgrade trend.

Full-Modular Design for Flexible Use

Adopting full-modular design, our 850W power supply enables free combination of cables, effectively reducing the space occupied by cables in the case, improving heat dissipation efficiency, and also facilitating future hardware upgrade and cable replacement.

Related products

The 850W power supply is a high-performance, future-ready component designed to meet the demands of next-generation computing systems, offering the perfect blend of power, efficiency, and versatility. It is an ideal choice for high-end gaming desktops, professional workstations, small enterprise servers, and industrial control equipment—where stable power delivery and long-term reliability are essential. Shenzhen Yijian Technology Co., Ltd., a professional PC power supply manufacturer with over 20 years of experience, has developed its 850W power supply to uphold the company’s reputation as a National High-tech Enterprise and Shenzhen Specialized and New Enterprise, leveraging advanced R&D, premium materials, and strict quality control. Yijian’s 850W power supply is built with a focus on compatibility, supporting the latest hardware standards such as PCI-E 5.0 and ATX 3.0. The power supply’s PCI-E 6+2pin connectors are rated for 300W per connector, making it compatible with next-generation GPUs that require high power delivery, while the 20+4pin motherboard connector and 8pin (4+4pin) CPU connector ensure compatibility with all modern motherboards and processors. For storage, the power supply includes multiple SATA 3.0 connectors and dedicated M.2 power connectors, supporting large arrays of hard drives, SSDs, and high-speed NVMe storage—critical for content creators and data-intensive applications. Efficiency is a key feature of the 850W power supply, which holds 80Plus Gold certification, achieving conversion efficiency of over 90% at typical load. The active PFC circuit ensures a power factor of over 0.95, optimizing energy usage and reducing the environmental impact. This level of efficiency not only lowers electricity bills but also reduces heat generation, extending the lifespan of the power supply and connected components. The power supply’s low standby power consumption (below 0.3W) further enhances its eco-friendly credentials, making it suitable for systems that are left on for extended periods. Yijian’s R&D team, consisting of over 20 professionals with more than 10 years of experience, has integrated advanced technologies to enhance the 850W power supply’s performance. The resonant LLC converter topology reduces switching losses and EMI, while a high-quality Japanese capacitor bank ensures stable voltage output even under extreme loads. The power supply’s voltage regulation is precise, with a load regulation of less than ±2%, ensuring that hardware receives consistent power regardless of load fluctuations. For thermal management, the 850W power supply features a 14cm PWM fan with a hydraulic bearing, which provides superior airflow while maintaining low noise levels. The fan’s intelligent speed control adjusts based on temperature, operating silently at low loads and ramping up gently under heavy load to maintain optimal temperatures. The internal heat sink is designed with a large surface area and high thermal conductivity, ensuring efficient heat dissipation even during prolonged high-load use. Yijian’s commitment to quality is reflected in its production process. The 850W power supply is manufactured in a 20,000-square-meter factory with 5 production lines and over 500 workers, operating under ISO9001 and ISO14001 certifications. The factory’s intelligent systems—E-SOP, Andon, and MES—standardize production, enable real-time tracking, and facilitate rapid problem resolution. Every power supply undergoes over 30 tests, including aging tests, high/low temperature cycling, short-circuit protection testing, and EMI testing, to ensure reliability and compliance with international standards. The ubiquitous QC team oversees every stage of production, from raw material inspection to final testing, ensuring that only flawless products reach customers. Safety is a top priority for Yijian, and the 850W power supply includes comprehensive protection functions: over-voltage, over-current, over-temperature, short-circuit, under-voltage, and over-power protection. These features safeguard the power supply and connected hardware from damage caused by electrical anomalies, providing users with peace of mind. All 850W power supplies are certified to UL, TUV, 3C, CB, FCC, CE, and other global standards, ensuring compatibility and safety in markets worldwide. Yijian’s after-sales service is second to none, with 1% spare parts for each order, 2-hour response to customer feedback, and a detailed 8D report within 24 hours. Products are exported to over 20 countries and regions, with local support to address customer needs. Whether for a gaming rig, a workstation, or a server, Yijian’s 850W power supply delivers the performance, efficiency, and reliability required to power the most demanding computing tasks.

Frequently Asked Questions

What is the difference between Gold and Platinum certified 850W power supplies?

The main difference between our Gold and Platinum certified 850W power supplies is energy conversion efficiency: the Gold certified model has an efficiency of more than 87% under typical load, with excellent energy efficiency and a more favorable price; the Platinum certified model has an efficiency of more than 90% under typical load, with ultra-high energy efficiency, lower power loss and heat generation, more suitable for long-term 24/7 operation of professional workstations and high-end gaming hosts.
Our 850W power supplies adopt an optimized heat dissipation design for high-power operation: we use large-diameter low-noise cooling fans with intelligent temperature control speed regulation function, which can adjust the fan speed according to the real-time temperature of the power supply; the internal heat dissipation fin structure is optimized to increase the heat dissipation area; the component layout is reasonable to ensure smooth air flow inside the power supply, effectively reducing the operating temperature.

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customer evaluation

Arthur

This 850W power supply has over-voltage, over-current and short-circuit protection functions. It can protect my high-end PC components well in abnormal situations, very safe.

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Platinum/Gold 80Plus 850W Power Supply for High-end PCs

Platinum/Gold 80Plus 850W Power Supply for High-end PCs

Our 850W power supplies cover Platinum and Gold 80Plus certifications, with full-modular design for easy cable management. Ideal for high-end gaming and professional PCs. Contact us for top-grade 850W power supply products.
High-performance 850W Power Supply with Multiple Protections

High-performance 850W Power Supply with Multiple Protections

Our 850W power supplies are equipped with over-voltage, over-current and short-circuit protection, safeguarding high-end PC components. Stable power output ensures smooth operation. Reach out to us for high-performance 850W power supplies.
Large Capacity Production of 850W Power Supply

Large Capacity Production of 850W Power Supply

With a monthly production capacity of 300,000 pcs, we can meet bulk orders of 850W power supplies with fast delivery. Our intelligent production system ensures product consistency. Contact us for bulk purchase of 850W power supplies.
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