For PC brands and distributors, the power supply is one of the most critical components in any Computer system. It directly affects stability, safety, and long-term reliability.

However, many buyers in the market have faced frustrating issues: power supplies claiming 80 PLUS Gold efficiency but performing closer to Bronze levels, unstable cable compatibility with modern Gpus, or excessive fan noise under load. These problems damage brand reputation and increase product return rates.

Dunao power supplies are designed not only to meet technical standards, but also to support long-term supply chain stability for global PC brands.

Components Validated Across 2000+ Global Brand Partnerships

When sourcing PC power supplies, stability matters more than short-term price advantages.

DUNAO has accumulated over 15 years of OEM manufacturing experience, supporting more than 2000 PC brands worldwide. Our products are exported to 200+ countries and regions, including the United States, Germany, Brazil, the UAE, and Southeast Asia.

Behind this stability is a strong manufacturing infrastructure.

Our factory operates:

• 25 modern production lines
• Daily output capacity exceeding 10,000 units
• Integrated manufacturing covering stamping, plastic molding, coating, and final assembly

For PSU production specifically, we combine:

• SECC steel housings for structural durability
• Precision component assembly
• Performance and reliability testing before shipment

This means our partners receive consistent product batches, reducing the risk of performance variations between shipments.

For distributors and PC brands, this translates into lower return rates and stronger brand trust.

 

From “80 PLUS Tier” to “Operational Cost Savings”

One of the most common concerns among hardware buyers is the accuracy of efficiency ratings.

Some suppliers advertise 80 PLUS Gold, but the actual power conversion efficiency does not consistently reach the required level.

At DUNAO, our PSU designs clearly define the efficiency tier and application positioning.

For example, one of our most popular OEM solutions is a 650W 80 PLUS Gold Semi-Modular Power Supply, designed for gaming and performance desktop systems.

Key specifications include:

Rated Power

• 650W continuous output
• Suitable for gaming PCs and mid-high performance systems

Efficiency Certification

• 80 PLUS Gold efficiency
• Up to 87–90% power conversion efficiency

Higher efficiency means:

• Reduced energy loss
• Lower heat generation
• Longer component lifespan

For PC brands selling prebuilt systems, this translates into better thermal performance and improved system reliability.

Connector Configuration

• 20+4Pin ATX motherboard power
• 8Pin EPS CPU power
• 6+2Pin PCIe connectors for modern GPUs
• SATA and MOLEX connectors

These connectors ensure compatibility with modern graphics cards and mainstream motherboard platforms, reducing installation issues for system builders.

From “Protection Circuits” to “System Safety Guarantee”

Efficiency is important, but system safety protection is equally critical.

Every DUNAO power supply integrates multiple hardware protection systems to prevent hardware damage.

Our PSU designs typically include:

• OVP – Over Voltage Protection
• OCP – Over Current Protection
• OPP – Over Power Protection
• SCP – Short Circuit Protection
• OTP – Over Temperature Protection
• UVP – Under Voltage Protection

These protection systems ensure that even under unstable grid conditions or heavy load spikes, the PSU can protect the motherboard, GPU, and storage components.

For distributors selling in global markets, this significantly reduces RMA risk and warranty claims.

From “Modular Design” to “Cable Management Satisfaction”

Another major decision for PC brands is choosing between non-modular, semi-modular, and fully modular PSU designs.

Different markets require different solutions.

For example:

Non-Modular PSU

• Lower cost
• Suitable for office PCs and entry-level systems

Semi-Modular PSU

• Balanced price and flexibility
• Popular in gaming desktop systems

Full Modular PSU

• Premium cable management
• Ideal for enthusiast or high-end gaming systems

Our 650W 80 PLUS Gold semi-modular PSU offers a practical compromise:

• Fixed motherboard and CPU cables
• Detachable PCIe and storage cables

This design reduces cable clutter while keeping costs competitive.

For system integrators, this means cleaner builds and improved airflow inside PC cases.

How OEM Brands Differentiate Their PSU Product Lines

Many PC brands want their power supply lineup to match their market positioning.

DUNAO supports multiple customization approaches for PSU OEM projects.

1. 80 PLUS Tier Selection

Brands can choose between:

• 80 PLUS White
• 80 PLUS Bronze
• 80 PLUS Silver
• 80 PLUS Gold

This allows brands to create clear product tiers.

2. Custom Cable Solutions

We support:

• Custom cable length
• Sleeved cable colors
• Brand-specific packaging

This is especially useful for gaming PC brands and boutique builders.

3. Wattage Range Expansion

Our PSU lineup covers:

• 300W office systems
• 500W mainstream PCs
• 650W gaming desktops
• 850W high-performance systems
• 1000W+ workstation platforms

This allows partners to build complete PSU product portfolios under their own brand.

 

OEM Power Supply Solutions for Global Hardware Brands

DUNAO provides a full OEM/ODM development workflow for power supply projects.

Our service includes:

• Product design consultation
• Logo and packaging customization
• Sample development
• Mass production

Key advantages include:

Low MOQ

Starting from 300 units, ideal for new product launches.

Fast Sampling

Sample development can be completed within 7 days.

Stable Lead Time

Mass production typically takes 15–30 days.

Factory-Direct Pricing

Since we are a factory-based manufacturer, our partners benefit from:

• No intermediary costs
• Transparent price structures
• Stable long-term pricing

We also provide product photos, marketing videos, and technical documentation, helping brands launch products faster.

Case Study: European Distributor Scaling a Gaming PSU Line

Last month, a German hardware distributor approached DUNAO with a serious problem.

They had previously sourced 80 PLUS Gold gaming power supplies from another supplier, but customer reviews started mentioning:

• Loud fan noise
• Inconsistent cable quality
• Efficiency levels that did not match the advertised rating

These issues threatened their reputation with retail partners.

After evaluating several factories, they partnered with DUNAO to develop a new PSU model.

The solution included:

• 650W 80 PLUS Gold Semi-Modular PSU
• 120mm silent cooling fan
• Full protection circuits
• Improved PCIe cable compatibility

The first order was 800 units, primarily for the German and Polish markets.

After strong sales and positive feedback, the distributor placed a second order of 2200 units within 60 days.

Today, the product has become one of their best-selling gaming PSU models.

OEM / ODM Cooperation Process

Working with DUNAO is designed to be straightforward and transparent.

Our typical collaboration process includes:

• Requirement discussion
• Product specification confirmation
• Sample development
• Performance and reliability testing
• Mass production
• Logistics and global shipment

Throughout the process, our in-house engineering and QC teams ensure product consistency.

FAQ – OEM Power Supply Manufacturing

Q1: What 80 PLUS certification levels can you manufacture?

We support 80 PLUS White, Bronze, Silver, and Gold power supplies depending on market positioning.

Q2: Do you offer modular PSU designs?

Yes. We manufacture non-modular, semi-modular, and fully modular PSUs.

Q3: What safety protections are included in your power supplies?

Our PSUs include OVP, OCP, OPP, SCP, OTP, and UVP protection systems.

Q4: What is your minimum order quantity?

Our standard MOQ starts at 300 units, depending on customization requirements.

Q5: What is the typical production lead time?

Mass production usually takes 15–30 days after order confirmation.

Q6: Can you provide certification support?

Yes. Our products support CE, RoHS, FCC, CCC, UKCA, and EAC certifications depending on the destination market.