Psu 400w
Overview
Product sourcing insights & recommendations
I have analyzed the 400W PSU product landscape and market trends for 2026. While the high-end gaming market has moved toward higher wattages (850W+), the 400W segment remains a critical standard for office desktops, HTPCs, and compact Mini-ITX builds.
Key insights include:
- Market Growth: The global PSU market is projected to reach up to $16 billion by 2026, with a shift toward ATX 3.1 and PCIe 5.1 standards even in mid-tier units.
- Technology Trends: GaN (Gallium Nitride) technology is expected to capture 25% of the PC PSU market by 2027, enabling smaller and more efficient designs.
- Technical Standards: For 2026 builds, a stable +12V rail (≥30A) and 80 Plus Gold efficiency are the recommended benchmarks for reliability.
- Sourcing Options: Verified B2B suppliers offer 400W modular units ranging from $19 to $58, depending on efficiency and customization needs.
The attached report provides a deep dive into top-rated models, technical specifications, and strategic sourcing recommendations for this segment.
I've generated a detailed market insight report for 400W PSUs. You can further explore this topic by:
400w Atx Power Supply 80 Plus Gold 12v Rail 30a
Products · 2 lists

Psu 400W 80plus Gold Certified ATX PC Power Supply Cheap PC Desktop Gaming Computer Server Power Supplies Unit in Stock
Shenzhen Tianfeng International Technology Co., Ltd.verified🇨🇳CN6 yrs
SNOWMAN 400W High Quality Real PC Power Supply 80 Plus Gold ATX for Gaming PCs with PCI-E Interface 12V Output in Stock
Dongguan Wan Yuan Electronic Technology Co., Ltd.verified🇨🇳CN2 yrs
Fan Controlled 400W Computer Power Supply ATX 12V Power Supply
Guangzhou Sunway Electronic Entertainment Equipment Co.,limited🇨🇳CN9 yrs
1800W-3000W 12V 80PLUS Gold Cooler Reliable Provider Dc to Dc Atx 24pin Atx Pc Gpu Computer Server PSU Power Supply
Shenzhen Ranshuo Technology Co., Ltd.verified🇨🇳CN6 yrs
Eveskey ATX 6Pin Newst Gaming Power Supply 500W Full Modular 80Plus Gold Certified 20+4Pin SFX
Shenzhen Tech Universe Co., Ltd.🇨🇳CN5 yrs
SAMA APFC 400W ATX Switching Power Supply Desktop Home/office Computer Power Supply ATX
Guangzhou AOJIE Science & Technology Co., Ltd.verified🇨🇳CN16 yrs
HuntKey GX750 750W Full Modular Power Supply 80PLUS Gold ATX 3.1 PCIe 5.1 Native 12V-2x6 Connector for Gaming Desktop PC
Hubei Jingpingou Technology Co., Ltd.🇨🇳CN1 yr
ATX500W Switch Power Supply for Computer Server Equipment Intel Standard Professional Gold-level Computer Power Supply Supplier
Shenzhen Bright Star Intelligent Lighting Co., Ltd.verified🇨🇳CN5 yrs
OEM 1000-1200W ATX 3.1&5.1 Full Modular 12V 5A AC 110V High Efficiency EMC Desktop/Computer Gaming PC Power Supply
Boluo Xurong Electronics Co., Ltd.verified🇨🇳CN5 yrs
Factory Price 350W 80plus ATX PC Power Supply ATX Psu
Shenzhen Inloom Technology Co., Ltd.🇨🇳CN15 yrs
Zumax APFC 80PLUS 1U Flex ATX 401W-500W Used Power Supply for Server/Desktop NAS Chassis Mini Power Supply with 2 Years Warranty
Dongguan Worldwide Electronic Technologies Co., Ltd.verified🇨🇳CN13 yrs
Desktop Office Computer Cheap Renew Power Source ATX Pc Dc Switching Power Supply for Computer case
Shenzhen Laintek Industrial Co., Ltd.🇨🇳CN20 yrs
Black Color Cover ATX 12V 2.3 Version ATX 500W 80 Plus Gold Standard Desktop Computer Power Supply
Guangzhou Qianxi Electronic Co., Ltd.verified🇨🇳CN9 yrs
General 24Pin 400W DC 12V Pico ATX Switch PSU Computer Power Supply Module
Shenzhen Wanweisi Technology Co., Ltd.🇨🇳CN6 yrs
Original Gigabyte Computer Power Supply P750GM 80PLUS GOLD ATX 12V 2.31 750W Desktop Switching Power Supply
Shenzhen Rant Technology Co., Ltd.verified🇨🇳CN6 yrs
Thermalright TR TP 1000 One Thousand Watt Full Modular Power Supply 80 Plus Gold ATX 30 Support Gaming PSU
Zhengzhou Sanrenxing Trading Limited Company🇨🇳CN7 yrs
Peak Power Supply of ATX Computer 400W Rated Power Supply 250W Desktop Energy-saving and Silent Computer Power Supply
Shenzhen Jiaxinjie Technology Co., Ltd.🇨🇳CN9 yrs
Thermalright TG750-W 750W White 80+ Gold Full Modular ATX 3.0 PCIe 5.0 Power Supply
J Arc International Trade (guangzhou) Co., Ltd.verified🇨🇳CN3 yrs
TR-TG850 ATX3.0 12V Hpwr Pcie 5.0 Rated Pc Power Supply High End Pc Psu 80 Plus GOLD 100-240V OEM/ODM Module Power Supply

FSP FlexGURU Power Supply, Flex ATX 300W, 80 Plus Gold, Full Modular FSP300-57FCB
HK STORY ENTERPRISE LIMITED🇭🇰HK2 yrs
Ruix GF850 80 Plus Gold Certified 850W 200-240 Vac Fully Modular ATX 3.0 Power PCIE 5.0 Supply PC PSU 120mm Silent Fan Power
Guangzhou Longcheng Electronic Industry Co., Ltd.🇨🇳CN4 yrs
Wholesale MSI MAG A850GL PCIE5 BK ATX3.0 DC Power Supply Full Modular Gold PSU 850W for Gaming Desktop Switching Power Supply

SNOWMAN Hot Sale 400W ATX Power Supply for PC Desktop and Server Gaming with 24Pin 12V Output in Stock
Dongguan Bingman Electronic Technology Co., Ltd.verified🇨🇳CN5 yrs
Low Price 200W Flex ATX Power Supply Full Voltage AC100-240V 1U FLEX 200 Server 80 Plus White Efficiency Metal in Stock
Shenzhen Jiumeng Electronics Technology Co., Ltd.verified🇨🇳CN1 yr
OEM/ODM Accepted 80PLUS Bronze 650W Full Modular ATX Power Supply Active PSU 100V - 240V AC
Shenzhen Yijian Technology Co., Ltd.verified🇨🇳CN5 yrs
Quality High Efficiency ATX Desktop Computer Power Supply500W-850W 80 PLUS Bronze Certified in Stock

PC/Computer/Desktop ATX Power Supply 400w 12v Atx Power Supply
Shenzhen Shunxinjie Industrial Co., Ltd.verified🇨🇳CN22 yrsDeep Dive · Full Report
Full Market Report
1 document · Live-fetched from source
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Sources & References
27 sources cited · Verified industry data & reports
Trendy MSI Power Supply 2026: What's New?
www.accio.com
By 2026, datacenter power conversion markets are projected to reach nearly $4 billion, while silicon carbide (SiC) oversupply and intensifying Chinese ...Read more ... The market, estimated at $15 billion in 2025, is projected to grow at a Compound Annual Growth Rate (CAGR) of 7% from 2025 to 2033. This growth ...Read more ... The global Power Supply Unit (PSU) market, valued at US$ 35.9 Bn in 2025 and projected to hit US$ 55.1 Bn by 2032, driven by rising demand and a steady 6.3% ... OEM 400W ATX 3.1&5.1 Full Modular 12V 5A 180-240V High Effic... Overall Trend: Search interest for "msi power supply" showed a general upward trend from March 2025 to August 2025, followed by a gradual decline into early 2026 1. Modular Power Supplies: "msi modular power supply" maintained a consistently lower search volume, indicating a smaller but persistent interest in this specific product type 1. Peak Interest: The highest search interest for "msi power supply" occurred in August 2025 with a normalized value of 64, coinciding with a peak for "msi modular power supply" at 7 1. This could indicate a period of new product releases or increased consumer purchasing activity. Asia-Pacific: This region is projected to remain the dominant market for computer case power supplies due to its large manufacturing base and significant consumer demand, especially in China 4. Asia Pacific will also dominate the switching power supply market in 2026 with an estimated 34% share 5.
Power Supply Units (PSU) Market Size, Share & 2031 Growth Trends ...
www.mordorintelligence.com
The Power Supply Units (PSU) Market worth USD 38.03 billion in 2026 is growing at a CAGR of 6.54% to reach USD 52.19 billion by 2031. Delta Electronics Inc., Lite-On Technology Corporation, TDK-Lambda Corporation (TDK Corporation), MEAN WELL Enterprises Co., Ltd. and Emerson Electric Co. are the major companies operating in this market. Note: Market size and forecast figures in this report are generated using Mordor Intelligence’s proprietary estimation framework, updated with the latest available data and insights as of January 2026. Silicon-carbide MOSFET average selling prices remain three to four times higher than silicon, with lead times extending beyond 26 weeks as of January 2026. Copper foil inflation, tied to EV battery demand, forces redesigns of printed-circuit-board trace widths to maintain bill-of-materials ceilings. Larger firms hedge through multi-year supply agreements, but smaller ODMs face margin compression that slows new-product introduction. Such volatility erodes profitability across the power supply units market, especially in mid-tier consumer segments where pass-through pricing is limited. The Power Supply Units (PSU) Market Report is Segmented by Device Type (AC-DC power supplies, DC-DC converters, and DC-AC inverters), Form Factor (Open-frame, Enclosed/chassis, DIN-rail, Brick, and Rack-mount/modular), Output-Power Range (Less than 50 W, 50-250 W, 250-1,000 W, and Above 1,000 W), End-user Industry (Industrial Automation and Machinery, Communications and Telecom, Consumer Electronics and Mobile, Automotive, Transportation, Medical Devices and Healthcare, LED and Lighting, Data Centers and Servers, and Defense and Aerospace), and Geography (North America, South America, Europe, Asia-Pacific, and Middle East and Africa). The Market Forecasts are Provided in Terms of Value (USD). ... It is projected to advance at a 6.54% CAGR, moving from USD 38.03 billion in 2026 to USD 52.19 billion by 2031.
400W Power Supply Guide: What You Actually Need to Know
electronics.alibaba.com
Lately, two converging trends have renewed interest in 400W PSUs: first, the rise of ultra-efficient CPUs and GPUs — like Intel’s 13th/14th-gen non-K parts and AMD’s Ryzen 7000 series with 65W TDP variants — reduces baseline system draw. Second, manufacturers now offer fully modular, 80 PLUS Bronze-certified 400W units at sub-$100 price points, making them attractive for cost-conscious builders 2. What’s the difference between 400W ATX and 400W 12V-only PSUs? ATX PSUs deliver +3.3V, +5V, +12V, and -12V with proper sequencing and PWR_OK signaling for motherboards. 12V-only units (often labeled ‘SMPS’) output only +12V — suitable for LEDs or CCTV, but incompatible with PCs. Home-scenario consumer electronics selection & setup optimization coach. It draws only what your system consumes — not its maximum rating. A 400W PSU powering a 180W load uses ~212W from the wall (at 85% efficiency), plus ~1–2W in standby. If you’re building or upgrading a basic office PC, HTPC, or light productivity desktop — and your GPU draws ≤75W (like Intel Arc A380, NVIDIA GT 1030, or AMD Radeon RX 6400), a quality 400W 80 PLUS Bronze or better ATX PSU is sufficient.
2026 Best Power Supplies for Global Buyers Guide?
www.dunaopc.com
As more and more people need reliable and efficient power supplies, folks around the world are finding it tougher to pick the right ones. I mean, if you check out that report from MarketsandMarkets, it says the global market for power supplies could hit about $30 billion by 2026 — so yeah, there’s definitely a big push for newer, smarter tech. This feedback underscores a gap that manufacturers can address to improve trust and customer satisfaction in the PSU market. User insights illustrate the evolving landscape of power supply preferences, pushing for enhancements in both product quality and clarity. As we move towards 2026, power supply technology is witnessing significant transformations. Sustainability is increasingly important. Manufacturers are developing eco-friendly solutions. These innovations aim to reduce carbon footprints while enhancing efficiency. Another key trend is the rise of smart power supplies. User reviews play a critical role in understanding Power Supply Units (PSUs) and their effectiveness. A recent study found that over 70% of consumers value user feedback when selecting a PSU. This insight highlights the importance of real-world experiences in decision-making. User reviews offer valuable insights from customers globally, shedding light on real-world experiences with different power supplies. Finally, the article explores emerging trends in power supply technology for 2026, providing a comprehensive overview for buyers aiming to make informed decisions in the dynamic landscape of power supplies.
PSU Tier List 2026: Best Gaming Power Supplies by Wattage | MaxMyBuild
www.maxmybuild.com
Oversized PSUs at 80% load or less: A 1600W PSU in a 400W build spends most of its time operating at 25% load, where efficiency is lowest. Skip: Bronze efficiency, non-modular at any price above $80, any PSU not rated for ATX 3.1 if buying a 2026 GPU · Some links on this page are affiliate links. If you buy through them, MaxMyBuild earns a small commission at no extra cost to you. Prices shown are approximate and change frequently; check current listings before buying. The right wattage depends on your GPU. The GPU is far and away the biggest power draw in a gaming PC: a modern high-end GPU consumes more watts than everything else in the system combined. The 12V-2x6 connector is the physical change introduced with ATX 3.1. It replaces the older 12VHPWR cable (used with RTX 4090 builds) which had known reliability issues. Any PSU sold new in 2026 that targets high-end GPUs should include the 12V-2x6 connector. The best power supply for gaming in 2026 is 80+ Gold certified and sized to your GPU.
Global Power Supply Unit (PSU) Market Research Report 2026-2034
semiconductorinsight.com
Challenges include counterfeit imports and low consumer awareness about efficiency ratings, though infrastructure development projects promise long-term growth. This market research report provides a comprehensive analysis of the Global and regional Power Supply Unit (PSU) markets, covering the forecast period 2025–2032. It offers detailed insights into market dynamics, technological advancements, competitive landscape, and key trends shaping the industry. Technology Trends & Innovation: Assessment of emerging technologies including 80+ Platinum efficiency standards, digital PSUs, and AI-powered power management solutions. Market Drivers & Restraints: Evaluation of growth drivers (gaming PC demand, data center expansion) and challenges (supply chain disruptions, raw material price volatility). Stakeholder Analysis: Strategic insights for PSU manufacturers, OEMs, component suppliers, and investors regarding market opportunities and competitive strategies. Europe Europe’s PSU market is shaped by the EU Ecodesign Directive and energy labeling regulations, driving innovation in low-power consumption units. Germany and France lead in industrial and commercial applications, while the UK gaming sector sustains demand for high-wattage modular PSUs. The region has seen a 12% CAGR in server PSU demand, with increased cloud computing investments. A significant trend is the shift toward fanless and silent PSUs in residential and office environments. A key trend is the growing second-hand PSU market, accounting for nearly 30% of transactions. Internet cafe expansions in Colombia and Peru provide steady commercial demand, while voltage stability issues necessitate robust surge protection features in consumer units.
