PSU Tier List: Your Guide to Choosing the Best Power Supplies

Power Supply Units (PSUs) serve as the heart of our computer systems, delivering energy to each component from the motherboard to the graphics card. Selecting an optimal PSU is a critical decision that affects not only the efficiency but also the reliability and longevity of a PC build. Traditionally, PSUs come in various wattages and efficiencies, each designed to cater to the different needs of users, from casual browsing machines to high-end gaming rigs.

We understand the nuances in power supply specifications can be overwhelming, which is why PSU tier lists are practical tools. These tier lists categorize PSUs into different levels based on their performance, build quality, and feature sets. Top-tier PSUs, for instance, offer gold or platinum efficiency ratings, signifying reduced electricity waste and lower operational costs. Moreover, a PSU’s noise level under load is a vital factor for users seeking a silent work environment.

In our evaluations, we don’t just look for high wattage numbers; we scrutinize the PSU’s ability to deliver clean, stable power under various conditions, which is paramount for the safety of components. The rail design, whether it be single or multi-rail, plays a significant role in how power is distributed and managed within our systems. Continuous updates and revisions to these lists reflect the latest models and technologies, ensuring the information we share is both current and relevant for the choices we make today.

Contents

1 Understanding PSU Ratings
- 1.1 Efficiency Certifications
- 1.2 Modularity Types
2 Top PSU Brands and Series
- 2.1 Premium Brands
- 2.2 Budget-Friendly Series
3 PSU Tier List
4 Technical Specifications and Features
- 4.1 Rail Configuration
- 4.2 Form Factors

Understanding PSU Ratings

In this section, we address how power supply units are classified based on efficiency and modularity. These ratings offer a clear understanding of what you can expect in terms of energy conservation and build flexibility.

Efficiency Certifications

80 Plus Certification Levels:

Bronze	Silver	Gold	Platinum	Titanium
82-85% Efficient	85-88% Efficient	87-90% Efficient	89-92% Efficient	90-94% Efficient

We assess PSUs based on their efficiency at different loads. Higher certifications like Gold, Platinum, and Titanium suggest better energy use. This means less energy wasted as heat and more savings on electricity bills.

Modularity Types

PSUs come in various modularity options, affecting ease of build and airflow.

Non-Modular: All cables are permanently attached. Economical but can clutter the case.
Semi-Modular: Essential cables are fixed; others are optional. Balances customization with value.
Fully Modular: All cables can be detached. Offers the best customization for a clean build.

For smaller builds, an SFX power supply, known for its reduced size, often incorporates modularity. Advanced features like RGB lighting are also available but do not impact the PSU’s performance.

Top PSU Brands and Series

In our journey to build reliable and efficient PCs, the power supply unit (PSU) remains a central component. With a diverse range of PSU brands and series, it’s essential to recognize the distinctions between premium and budget-friendly offerings to make informed choices.

Premium Brands

Corsair, Seasonic, and EVGA are often lauded for their high-quality power supplies. Corsair’s RMx and AXi series have earned respect in the market for superior performance and reliability. Seasonic’s reputation is bolstered by their focus on efficiency and durability, exemplified in their PRIME series.

Be Quiet! is praised for their silent operation and efficiency, making them a top choice among users with noise concerns. Similarly, Super Flower is known for producing some of the best PSUs, especially in terms of efficiency and build quality, with lead offerings like their Leadex series.

Budget-Friendly Series

Dealing with a tighter budget doesn’t mean sacrificing stability. Corsair‘s CX-M series provides a blend of quality and affordability. Similarly, Thermaltake and Cooler Master offer budget-conscious options like the Smart series and the MWE series respectively, which strike a balance between cost and performance for any build.

Antec also serves the budget market well, with their high-value series offering good power efficiency at a lower price point. We find that units from these series generally maintain solid performance without the premium cost.

PSU Tier List

In evaluating power supply units (PSUs), we categorize them into tiers based on performance, build quality, and intended use. Tier A represents the pinnacle of PSUs, suitable for high-end gaming PCs. Moving to Tier B, these are robust choices for mid-range systems. At Tier C, we have reliable units that are more than capable for basic builds or entry-level systems.

Tier A – Best for High-End Gaming PCs

High-end gaming PCs demand consistent and reliable power, and Tier A PSUs, like the Corsair AX1600i and the EVGA SuperNOVA T2, stand out. The AX1600i is renowned for its exceptional efficiency and fully modular design. The T2 series also boasts similar high standards, providing stable power with very low ripple. Both units are 80 Plus Titanium rated, indicating top efficiency.

Tier B – Reliable for Mid-Range Systems

For mid-range gaming systems, PSUs like the Seasonic Prime series and the Corsair RMi series offer a great balance of performance and price. The Prime series is known for its robust build and high efficiency, while the RMi series brings customizable fan control and excellent efficiency. The Be Quiet! Straight Power 11 slides into this category too, providing whisper-quiet operation without sacrificing quality.

Tier C – Standard for Basic Builds

Tier C is where we find PSUs that deliver adequate performance for standard builds, like the Cooler Master V Gold V2 and the Bitfenix Formula Gold. They are well-suited for systems that do not require the intense load capacities of the top-tier units but still maintain good efficiency and reliability. These units are typically 80 Plus Gold rated, ensuring good energy efficiency for everyday computing needs.

Technical Specifications and Features

In assembling a gaming PC, understanding the technical specifications and features of power supply units (PSUs) is crucial. We’ll focus on rail configurations and form factors, which directly impact your build’s performance and compatibility.

Rail Configuration

Rail configuration is a key feature to consider when choosing a PSU. This can greatly affect the stability and distribution of power within a PC. Generally, PSUs come in two configurations: single-rail and multi-rail. Single-rail PSUs supply one large power source capable of fueling all components, which simplifies setup and is usually found in mid-range models. Multi-rail PSUs divide the output current across multiple rails, offering better power distribution and overcurrent protection, ideal for high-end GPUs and overclocking scenarios.

Form Factors

The form factor of a PSU determines the dimensions and the layout of the power supply, influencing how it will fit into your computer case and connect with other components. The most common form factor is ATX, which is compatible with the majority of mid-range and high-end gaming PCs. However, for more compact builds, users may opt for SFX or SFX-L form factors. SFX Gold or SFX-L units provide a smaller footprint without compromising on efficiency or performance and are coveted in building small form factor (SFF) systems with powerful GPUs, requiring stable AMP delivery.

Rail Type	Advantages	Best for
Single-Rail	Ease of setup, can power high-end GPUs	Mid-Range to High-End Gaming PCs
Multi-Rail	Better power distribution, enhanced safety	High-End PCs, Overclocking
Form Factor	Size	Compatibility
ATX	Larger	Most Gaming PCs
SFX/SFX-L	Compact	Small Form Factor PCs