When it comes to building your PC in 2026, selecting the right ATX 3.1 power supply can make all the difference. You need something that guarantees stable power delivery while being energy-efficient. With numerous options available, it can be challenging to decide which one suits your needs best. Let’s explore the top contenders that promise reliability and performance, giving you the confidence to power your build effectively.
CORSAIR RM850e Fully Modular 850W Power Supply
If you’re building a high-performance gaming rig or a powerful workstation, the CORSAIR RM850e Fully Modular 850W Power Supply is an excellent choice. With its fully modular cabling, you can customize connections for a cleaner build. It’s Intel ATX 3.1 certified and supports PCIe 5.1, ensuring compatibility with the latest GPUs. The 120mm rifle bearing fan operates quietly, while the specially calculated fan curve minimizes noise even under load. Plus, the 105°C-rated capacitors provide reliable power, and its Cybenetics Gold rating guarantees high efficiency. You’ll also enjoy quick wake-from-sleep times with Modern Standby compatibility.
Best For: Gamers and professionals seeking a reliable, high-efficiency power supply for high-performance systems.
Pros:
- Fully modular cabling allows for customizable connections, creating a cleaner and more organized build.
- Intel ATX 3.1 certified with PCIe 5.1 support ensures compatibility with the latest hardware.
- Quiet operation due to the 120mm rifle bearing fan and optimized fan curve, minimizing noise under load.
Cons:
- 850W may not be sufficient for extremely high-end setups with multiple GPUs or power-hungry components.
- Higher price point compared to non-modular or lower wattage power supplies.
- Limited availability in some regions may make it harder to purchase.
Lian Li Edge Series 1000W Full Modular Power Supply
The Lian Li Edge Series 1000W Full Modular Power Supply stands out for gamers and PC builders seeking top-tier performance and efficiency. With 80 Plus Platinum certification, it’s designed to minimize energy waste while delivering powerful output. The ATX 3.0/3.1 compliance and PCIe 5.1 readiness guarantee compatibility with the latest components. Its L-shape design fits perfectly in dual chamber cases, while the 120mm FDB fan keeps things cool. Plus, the built-in USB expansion hub supports up to four internal USB 2.0 headers. You’ll appreciate the quality construction, featuring alloy copper soldered terminals for reliable power delivery.
Best For: Gamers and PC builders seeking a high-efficiency power supply with cutting-edge compatibility features.
Pros:
- 80 Plus Platinum certification ensures minimal energy waste and high efficiency.
- ATX 3.0/3.1 compliant and PCIe 5.1 ready for compatibility with the latest hardware.
- Built-in USB expansion hub supports multiple internal USB headers for added connectivity.
Cons:
- L-shape design may limit compatibility with non-dual chamber cases that exceed height restrictions.
- Higher price point compared to standard power supplies may not fit all budgets.
- The cooling system relies on a single 120mm fan, which may not be sufficient for extreme overclocking scenarios.
ASUS Prime 750W Gold Fully Modular Power Supply
For gamers and PC enthusiasts seeking a reliable and efficient power supply, the ASUS Prime 750W Gold Fully Modular Power Supply stands out with its 80+ Gold certification, ensuring exceptional energy efficiency. This fully modular unit features an axial-tech fan designed for ideal airflow, while dual ball bearings enhance durability. With a 750W output and compatibility with ATX 3.0 and PCIe Gen 5.0 graphics cards, it’s perfect for high-performance builds. Plus, its eight-year warranty offers peace of mind. Available in two color options, it combines style and functionality to power your gaming rig confidently.
Best For: Gamers and PC enthusiasts seeking a reliable and efficient power supply for high-performance builds.
Pros:
- Fully modular design allows for easy cable management and customization.
- 80+ Gold certification ensures exceptional energy efficiency and lower electricity costs.
- Durable dual ball bearing fan design enhances longevity and reliability.
Cons:
- Slightly heavier compared to some other power supplies in the same wattage range.
- Higher price point compared to non-modular power supplies.
- Limited color options may not appeal to all aesthetic preferences.
ASUS Prime 850W Gold Fully Modular Power Supply
Designed for serious gamers and PC builders, the ASUS Prime 850W Gold Fully Modular Power Supply offers exceptional performance with its 80 Plus Gold certification, ensuring high efficiency and reliability. Weighing just 3.3 pounds and measuring 5.9 x 5.9 x 3.3 inches, it’s compact yet powerful. The dual ball fan bearings enhance durability, while the axial-tech fan design improves airflow for peak cooling. Plus, it comes bundled with a 16-pin PCIe cable, making it ready for the latest PCIe Gen 5.0 graphics cards. With an impressive 4.7-star rating and an 8-year warranty, you can build your rig with confidence.
Best For: Serious gamers and PC builders looking for a high-performance, reliable power supply for their gaming rigs.
Pros:
- High efficiency with 80 Plus Gold certification, ensuring reliable power delivery.
- Dual ball fan bearings and axial-tech fan design enhance durability and improve cooling performance.
- Bundled with a 16-pin PCIe cable, compatible with the latest PCIe Gen 5.0 graphics cards.
Cons:
- The relatively higher price point compared to non-modular options.
- Limited color options may not suit all aesthetic preferences.
- Weighs 3.3 pounds, which might be heavier than some compact power supplies.
Corsair RM1200x Shift Fully Modular ATX Power Supply
Offering a fully modular design, the Corsair RM1200x Shift is perfect for enthusiasts who crave an organized and efficient build. Compliant with ATX 3.1 and PCIe 5.1 standards, it delivers efficient power with 80 PLUS Gold efficiency. The Micro-Fit PSU connectors let you choose only the cables you need, minimizing clutter. Plus, the Zero RPM Fan Mode guarantees your system runs silently under low loads. With high-quality 105°C-rated Japanese capacitors and a 140mm fluid dynamic bearing fan, you can count on reliability and performance. Backed by a ten-year warranty, this power supply is a solid choice for any setup.
Best For: Enthusiasts seeking a reliable, efficient, and organized power supply for high-performance builds.
Pros:
- Fully modular design allows for selective cable connections, reducing clutter in your setup.
- Zero RPM Fan Mode ensures silent operation during low and medium loads.
- Long ten-year warranty provides peace of mind regarding reliability and longevity.
Cons:
- Higher price point compared to non-modular power supplies.
- May be overkill for basic or low-power systems.
- Side interface may not be compatible with all case designs.
Corsair RM850x Shift Fully Modular ATX Power Supply
The Corsair RM850x Shift Fully Modular ATX Power Supply stands out with its fully modular Micro-Fit PSU connectors, making it an ideal choice for gamers and PC builders who appreciate clean cable management. It’s 80 Plus Gold certified and supports Intel ATX 3.1 and PCIe 5.1, ensuring reliable power delivery while resisting transient power spikes. With a zero RPM fan mode, you’ll enjoy silent operation during low loads. The side cable interface enhances accessibility, while the 140mm fluid dynamic bearing fan keeps noise low. Plus, it’s backed by a ten-year warranty for peace of mind in your build.
Best For: Gamers and PC builders who prioritize clean cable management and reliable power delivery.
Pros:
- Fully modular Micro-Fit PSU connectors allow for customized cable management.
- 80 Plus Gold certification ensures high efficiency and reliability.
- Zero RPM fan mode provides silent operation during low and medium loads.
Cons:
- May be overkill for budget builds that don’t require high wattage.
- Slightly heavier than some competing power supplies.
- Availability may be limited due to high demand in the market.
Thermaltake SMART 600W Power Supply (PS-SPD-0600NPCWUS-W)
For gamers and PC builders seeking reliable power delivery, the Thermaltake SMART 600W Power Supply (PS-SPD-0600NPCWUS-W) stands out with its impressive 80 PLUS certification, ensuring 80% efficiency under typical loads. It delivers a continuous output of 600W at +40℃, making it perfect for demanding builds. With two PCI-E 6+2 pin connectors and a robust +12V rail, it supports high-performance components effortlessly. The power supply also features essential protections like Over Power, Over Voltage, and Short Circuit Protection. With a mean time between failures of 100,000 hours, you can trust this unit for long-lasting reliability in your setup.
Best For: Gamers and PC builders seeking a reliable and efficient power supply for high-performance components.
Pros:
- 80 PLUS Certified for 80% efficiency under typical loads, reducing energy waste.
- Robust protection features including Over Power, Over Voltage, and Short Circuit Protection for enhanced safety.
- High reliability with a Mean Time Between Failures (MTBF) of 100,000 hours, ensuring long-lasting performance.
Cons:
- Limited to a maximum output of 600W, which may not suffice for extremely high-end builds.
- Only two PCI-E 6+2 pin connectors, potentially restricting multi-GPU setups.
- Hold up time of 16 milliseconds may be too short for some sensitive components.
Thermaltake Toughpower GT 750W ATX Power Supply
Designed for gamers and PC enthusiasts, the Thermaltake Toughpower GT 750W ATX Power Supply stands out with its 80 PLUS Gold efficiency, delivering up to 90% power efficiency. Fully compatible with Intel ATX 3.1 standards, it features native PCIe 12V connectors for modern GPUs, supporting up to 300W output. Smart Zero Fan Technology guarantees quiet operation by adjusting fan speed automatically. Its fully modular design helps with airflow and cable management. With a 5-year warranty and a customer rating of 4.6 out of 5 stars, this power supply is a reliable choice for your high-performance build.
Best For: Gamers and PC enthusiasts seeking a high-performance, efficient power supply for their builds.
Pros:
- 80 PLUS Gold efficiency provides up to 90% power efficiency, reducing energy costs.
- Fully modular design allows for improved airflow and easy cable management.
- Smart Zero Fan Technology ensures quiet operation by automatically adjusting fan speed.
Cons:
- Higher price point compared to standard power supplies.
- Limited to a maximum output of 750W, which may not be sufficient for extremely high-end systems.
- Some users may prefer a non-modular design for simplicity in setup.
CORSAIR RM1000e 1000W Fully Modular Power Supply
Looking for a power supply that can handle high-performance gaming rigs? The CORSAIR RM1000e 1000W Fully Modular Power Supply is an excellent choice. With its ATX 3.1 and PCIe 5.1 readiness, it supports intense GPU demands while maintaining Cybenetics Gold efficiency. The fully modular design allows you to connect only the cables you need, keeping your build tidy. Plus, the 120mm rifle bearing fan keeps noise to a minimum, even at full load. With 105°C-rated capacitors, you’ll enjoy reliable power and quick wake-from-sleep times, making this PSU a solid option for any serious gamer.
Best For: Gamers and PC builders seeking a high-performance, efficient power supply for demanding setups.
Pros:
- Fully modular design allows for a clean and customizable cable management.
- Cybenetics Gold efficiency ensures reduced power waste and lower electricity bills.
- 120mm rifle bearing fan minimizes noise during operation, even under heavy loads.
Cons:
- Higher price point compared to lower wattage or non-modular options.
- Limited RGB lighting options for aesthetically-focused builds.
- May be overkill for casual users or low-power systems.
Apevia ATX-SL850W Soul 850W Fully Modular Power Supply
The Apevia ATX-SL850W Soul 850W Fully Modular Power Supply stands out with its full modular design, making it an excellent choice for gamers and PC builders who prioritize cable management and airflow. It’s compatible with ATX 3.0 & 3.1 standards and features a 12VHPWR cable for the latest GPUs. With a robust 140mm fan that auto-regulates for ideal cooling, you’ll enjoy silent operation. This PSU supports up to 600W for NVIDIA GeForce RTX Series cards, ensuring your system runs smoothly. Plus, it includes essential protections against short-circuit and over-voltage, giving you peace of mind during intense gaming sessions.
Best For: Gamers and PC builders seeking a fully modular power supply with excellent cable management and compatibility with the latest GPUs.
Pros:
- Fully modular design allows for cleaner builds and improved airflow.
- Supports up to 600W for high-performance NVIDIA GeForce RTX Series graphics cards.
- Equipped with essential protections against short-circuit and over-voltage for enhanced safety.
Cons:
- Weighs 4.8 pounds, which may be heavier compared to some other power supplies.
- Warranty information is not explicitly provided, requiring inquiry for details.
- Limited customer reviews (16) may not provide a comprehensive overview of long-term reliability.
Factors to Consider When Choosing an ATX 3.1 Power Supply
When choosing an ATX 3.1 power supply, you need to take into account several key factors. Think about your power output requirements, the benefits of a modular design, and the efficiency ratings that suit your setup. It’s also important to evaluate cooling solutions and guarantee compatibility with your components.
Power Output Requirements
Choosing the right power output for your ATX 3.1 power supply is essential, especially since inadequate wattage can lead to system instability. Start by calculating the total wattage needed for your CPU, GPU, and other components. This gives you a baseline to work from.
It’s wise to pick a power supply with a higher wattage than your current needs, allowing room for future upgrades. Remember, the power supply’s rating, like 750W or 850W, indicates its maximum continuous output, vital for stability during peak loads.
Additionally, make sure it can handle transient power excursions to prevent crashes or damage. Finally, look for efficiency ratings, such as 80 PLUS certifications, to understand operational costs and energy waste.
Modular Design Benefits
After determining the power output requirements for your system, considering the modular design of your ATX 3.1 power supply can greatly enhance your overall build. A fully modular design allows you to connect only the necessary cables, reducing clutter and improving airflow within your system. With customizable connections, managing and organizing cables during installation and maintenance becomes much easier. Detaching unused cables helps achieve a cleaner aesthetic, boosting your build’s appearance. Additionally, fully modular power supplies simplify upgrades and replacements, as you can remove specific cables without affecting others. This design not only contributes to better thermal performance but also helps maintain lower operating temperatures for your internal components, ensuring a more efficient and reliable system.
Efficiency Ratings Explained
Efficiency ratings serve as an essential benchmark for evaluating an ATX 3.1 power supply‘s performance. These ratings, like the 80 PLUS certification, show how much input power is effectively converted into usable output, with higher ratings meaning less energy waste. The tiers range from Bronze to Titanium, with Titanium achieving over 96% efficiency at specific loads. A more efficient power supply directly influences your system’s performance and power consumption, especially during high-demand tasks like gaming. Plus, higher ratings often indicate better build quality, enhancing reliability and longevity. Ultimately, choosing a power supply with a higher efficiency rating can save you money on electricity bills and cooling costs, as less energy is wasted as heat.
Cooling Solutions Available
When selecting an ATX 3.1 power supply, effective cooling solutions are essential for maintaining performance and reliability. Look for models with 120mm fans designed for low noise and optimized airflow, ensuring efficient heat dissipation during high load conditions. Advanced cooling technologies like Zero RPM Fan Mode let the fan operate silently at low to medium loads, enhancing overall system acoustics. Additionally, high-quality bearing systems, such as fluid dynamic or dual ball bearings, improve fan longevity and contribute to quieter operation. Pay attention to cooling system designs, which often feature specially calculated fan curves to minimize noise while maintaining performance. Some power supplies even include smart fan technology that adjusts speed based on thermal load, striking a balance between cooling efficiency and noise levels.
Compatibility With Components
Selecting the right ATX 3.1 power supply goes beyond adequate cooling; compatibility with your components is crucial for a successful build. First, verify your power supply is ATX 3.1 certified, guaranteeing it works with the latest motherboards and components. Check for a PCIe 5.1 ready connector, essential for modern graphics cards. Make sure the wattage meets all component needs, ideally 20% higher than your total estimated power draw. Opt for fully modular cabling to tailor connections for your setup, enhancing cable management and airflow. Finally, confirm that the power supply has necessary connectors for every component, including multiple CPU power cables, PCIe power for GPUs, and SATA power for storage devices. This attention to detail will assure reliability and performance.