The heart of any high-performance PC lies in its power supply unit (PSU), and when it comes to the demanding world of SFX form factor systems, choosing the right one is crucial. SFX PSUs are a compact and efficient solution for small form factor builds, offering powerful performance in a smaller footprint. However, navigating the vast array of options can be daunting. That’s where our guide comes in, designed to help you find the best SFX PSUs that meet your specific needs and budget.
We’ve compiled a comprehensive list of top-rated SFX PSUs, delving into their performance, features, and overall value. From high-end models with cutting-edge technology to budget-friendly options that don’t compromise on quality, our reviews provide detailed insights to help you make an informed decision. Whether you’re building a compact gaming rig, a silent workstation, or anything in between, our buying guide will equip you with the knowledge to choose the perfect SFX PSU that powers your dream machine.
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What Are SFX PSUs?
SFX PSUs, or Small Form Factor Power Supplies, are a specialized type of power supply designed for smaller computer cases, particularly those with limited space. These PSUs are typically smaller than standard ATX PSUs, offering a more compact footprint without compromising on power delivery.
SFX PSUs are becoming increasingly popular, particularly in the realm of small form factor (SFF) PC builds. Their reduced size allows for the construction of smaller, more aesthetically pleasing systems while still providing the necessary power for demanding components.
The adoption of SFX PSUs has been driven by the growing popularity of mini-ITX motherboards and smaller cases, often preferred for their space-saving advantages and sleek design. Despite their compact size, SFX PSUs are capable of delivering ample power for modern gaming PCs and other high-performance systems.
When choosing the best SFX PSUs, factors like wattage, efficiency, modularity, and noise levels should be considered. With a range of models available, it is important to select a PSU that meets the specific power requirements of your system and offers the desired features.
Despite their smaller size, SFX PSUs offer a competitive alternative to their larger ATX counterparts, providing a balance of power, efficiency, and compactness for various SFF PC builds. The availability of a diverse range of SFX PSUs ensures that users can find the optimal solution for their specific needs, whether it’s a high-performance gaming rig or a space-constrained media center.
Best Sfx Psus – Reviews
1. Corsair HX1500i
The Corsair HX1500i is a high-end power supply unit (PSU) that delivers exceptional performance and reliability. With a massive 1500W output, it’s more than capable of powering even the most demanding gaming rigs and workstations. The HX1500i boasts an 80 Plus Platinum certification, ensuring efficient power delivery and reducing wasted energy. The fully modular design allows for easy cable management, while the zero RPM fan mode keeps noise levels to a minimum during idle or low-load operation.
The HX1500i comes with a comprehensive 10-year warranty, which is a testament to its high build quality and longevity. Its advanced features, including Corsair’s iCUE software for real-time monitoring and control, make it an excellent choice for gamers and enthusiasts who demand the best.
2. Seasonic PRIME TX-1000
The Seasonic PRIME TX-1000 is a powerhouse PSU that blends top-tier performance with quiet operation. It boasts a generous 1000W output and an 80 Plus Titanium certification, making it one of the most efficient PSUs available. The PRIME TX-1000 features a fully modular design, allowing for meticulous cable management, while its patented Seasonic fan control ensures a whisper-quiet operation, even under heavy load.
The Seasonic PRIME TX-1000 is built with high-quality components, including Japanese capacitors, for maximum reliability and durability. The 12-year warranty demonstrates the confidence Seasonic has in their product. If you’re looking for a top-of-the-line PSU that delivers both power and peace of mind, the PRIME TX-1000 is a strong contender.
3. EVGA SuperNOVA 1300 G3
The EVGA SuperNOVA 1300 G3 is a reliable and feature-rich PSU that punches above its weight. It offers a powerful 1300W output and an 80 Plus Gold certification, providing ample power for high-end systems while ensuring energy efficiency. The G3 features a fully modular design, making cable management a breeze. The 135mm fan with a double ball bearing design ensures quiet operation and longevity.
The EVGA SuperNOVA 1300 G3 comes with a 10-year warranty, demonstrating EVGA’s confidence in its product’s quality. It also includes a plethora of safety features, such as over-voltage, over-current, and short-circuit protection, ensuring the safety of your system. The G3 is an excellent choice for users who want a well-rounded PSU that offers a balance of performance, efficiency, and reliability.
4. be quiet! Straight Power 11 750W
The be quiet! Straight Power 11 750W is a quiet and reliable PSU designed for demanding systems. It delivers a solid 750W output and boasts an 80 Plus Gold certification, ensuring efficient power delivery. The Straight Power 11 features a semi-modular design, providing flexibility in cable management. Its proprietary Silent Wings 3 fan with fluid dynamic bearings ensures a silent operation, even under heavy load.
The be quiet! Straight Power 11 750W comes with a 5-year warranty, highlighting its high build quality. It also features various safety protections, including over-voltage, over-current, and short-circuit protection, ensuring the security of your system. The Straight Power 11 is an excellent option for users who prioritize quiet operation and reliability without sacrificing performance.
5. Thermaltake Toughpower GF1 850W
The Thermaltake Toughpower GF1 850W is a budget-friendly PSU that delivers solid performance and value. It provides a robust 850W output and an 80 Plus Gold certification, making it an efficient choice for mid-range systems. The GF1 features a fully modular design, facilitating cable management. Its 140mm fan with a hydraulic bearing design ensures a quiet and long-lasting operation.
The Thermaltake Toughpower GF1 850W comes with a 7-year warranty, showcasing the confidence in its durability. It also incorporates various safety protections, including over-voltage, over-current, and short-circuit protection, ensuring the safety of your system. The GF1 is an excellent choice for budget-conscious users who want a reliable and efficient PSU without breaking the bank.
Why Do You Need An SFX PSU?
SFX PSUs, or Small Form Factor power supplies, are becoming increasingly popular in the world of PC building. But why? What makes them stand out from their ATX counterparts? The answer lies in their compact size and enhanced versatility, opening up a world of possibilities for smaller PC builds.
One of the key reasons to consider an SFX PSU is the ability to build a compact PC. These PSUs are significantly smaller than ATX PSUs, making them ideal for smaller cases, such as mini-ITX and SFF builds. This allows you to create powerful yet compact gaming PCs or media centers without sacrificing performance.
Furthermore, SFX PSUs often boast impressive power efficiency and quiet operation, crucial aspects for smaller form factors where space and noise are at a premium. They are designed to fit into tight spaces without compromising performance or introducing unnecessary noise.
Finally, the growing popularity of SFX PSUs has led to a wider range of options, from budget-friendly models to high-end, high-wattage units. This means you can find the perfect SFX PSU for your specific needs and budget, ensuring both performance and value.
What is an SFX PSU?
SFX PSUs, or Small Form Factor Power Supplies, are a smaller and more compact version of the standard ATX power supply units. They are specifically designed for small form factor (SFF) PC cases, often found in mini-ITX builds, which are known for their reduced footprint and sleek aesthetics. These PSUs offer the same power output and functionality as their larger counterparts, but in a significantly smaller package. They typically use a proprietary connector for the motherboard, but some models also offer standard ATX connections for wider compatibility.
SFX PSUs are an excellent choice for those who prioritize a small and compact PC build without compromising performance. They are especially popular among gamers, enthusiasts, and users who value space-saving design. However, it’s crucial to ensure the PSU’s power output meets your PC’s requirements and that the case has adequate space for the SFX PSU.
Choosing the Right SFX PSU for Your Needs
Selecting the right SFX PSU requires considering several factors, such as power output, efficiency, features, and noise level. The power output should be sufficient to meet your PC’s power demands, taking into account the components you intend to use. Efficiency is another vital aspect, as a highly efficient PSU translates to lower energy consumption and less heat generation. Look for PSUs with 80 Plus certification, which guarantees a certain level of efficiency.
Additionally, consider features like modular cables, which offer improved airflow and cable management within the case. Noise level is also a crucial factor, especially for those seeking a quiet PC. Opt for PSUs with a low decibel rating and features that minimize noise generation. Finally, the warranty period should be considered, as a longer warranty provides peace of mind in case of any issues.
Advantages of SFX PSUs
SFX PSUs offer several advantages over standard ATX power supplies, particularly for SFF PC builds. The smaller size is the most significant advantage, as it allows for more compact and space-saving PC designs. This is particularly beneficial for mini-ITX cases, which are often limited in space. The smaller footprint also allows for better airflow and thermal performance, as there is less obstruction within the case.
Another advantage of SFX PSUs is their increased popularity, leading to a wider range of models and power outputs available. This gives users more options to choose from based on their specific needs and budget. While some models may be more expensive than their ATX counterparts, the benefits of compactness and improved airflow often outweigh the cost difference for SFF PC builders.
The Best SFX PSUs: A Comprehensive Buying Guide
Building a high-performance PC requires careful consideration of every component, and the power supply unit (PSU) is no exception. For those seeking the most compact and powerful configurations, SFX PSUs offer a unique solution. These miniaturized units, boasting a smaller form factor than standard ATX PSUs, are perfect for small form factor (SFF) PCs, including ITX builds and custom cases. Choosing the right SFX PSU can be a challenge, as the market is relatively niche. This guide will delve into seven crucial factors to consider when selecting the best SFX PSUs for your needs.
1. Power Output and Efficiency
The first and foremost consideration is the power output required by your system. SFX PSUs typically offer a lower wattage range compared to their ATX counterparts, with most options ranging from 450W to 750W. Carefully assess the power draw of your components, including the CPU, GPU, and peripherals, to determine the necessary wattage. Aim for a PSU with at least 10-15% headroom to ensure adequate power delivery and prevent overloading. Additionally, efficiency is a key factor, with 80 Plus certification being the industry standard. Higher-rated certifications like 80 Plus Gold or Platinum indicate better energy efficiency, resulting in reduced heat and lower energy consumption.
2. Form Factor Compatibility
As mentioned earlier, SFX PSUs are designed for smaller form factor cases. Ensure that the PSU you choose is physically compatible with your case. Some cases may support both SFX and SFX-L PSUs, which offer slightly longer lengths for additional clearance. Check the dimensions of your chosen case and PSU to confirm compatibility.
3. Cable Management and Length
Effective cable management is crucial for maintaining airflow and aesthetics within your PC. SFX PSUs often feature shorter cables compared to their ATX counterparts, so assess your case layout and component placement. Consider whether you need custom-length cables or a PSU with modular connectors for optimal flexibility.
4. Connectors and Outputs
Modern PSUs offer various connectors to power different components. SFX PSUs typically include a combination of PCIe connectors for your graphics card, SATA connectors for storage devices, and 4-pin or 8-pin EPS connectors for your motherboard. Check the specific connectors and outputs provided by the PSU to ensure compatibility with your system.
5. Noise Level and Temperature
Noise can be a significant concern for PC builders, especially in small form factor builds where components are closer together. Look for PSUs with low noise levels, especially those with higher quality fan designs and thermal management features. Lower noise levels are essential for maintaining a comfortable and quiet computing experience.
6. Reliability and Warranty
Selecting a reliable PSU is crucial to the longevity and stability of your system. Consider the manufacturer’s reputation and warranty length. Look for brands known for quality construction and proven track records. A longer warranty period offers peace of mind and protection in case of any unforeseen issues.
7. Price and Value
Finally, factor in the price of the PSU. While the best SFX PSUs can be more expensive than their ATX counterparts, remember that a good quality PSU is an investment in your system’s longevity and stability. Consider the features, performance, and warranty offered to determine the best value for your budget.
Frequently Asked Questions
Best SFX PSUs: Reviews and Buying Guide – FAQs
1. What is an SFX PSU and why should I use one?
An SFX PSU is a smaller version of the standard ATX PSU. While it offers the same power and functionality, its reduced size makes it perfect for smaller cases like SFF PCs, mini-ITX systems, and even some mid-tower cases. SFX PSUs provide the same reliability and performance as their ATX counterparts, while taking up less space and allowing for a cleaner, more compact build.
The benefits of using an SFX PSU include increased space within your PC case for better airflow and cable management, a reduction in weight, and more flexibility when choosing a case. While they’re generally more expensive than ATX PSUs, their compact nature and increased efficiency make them an excellent choice for users seeking a smaller, more manageable build.
2. What are the key features to look for in an SFX PSU?
When choosing an SFX PSU, you should pay attention to several key features. First, consider the power output (wattage) required to power all of your components. Next, check the number and types of connectors available to ensure compatibility with your motherboard, GPU, and other peripherals. Efficiency rating is another crucial factor, with higher ratings like 80+ Gold or Platinum indicating better power conversion and reduced energy consumption.
Finally, ensure the PSU has the necessary certifications and safety features like OCP (Over Current Protection), OVP (Over Voltage Protection), and OPP (Over Power Protection). These features help protect your PC from damage and ensure reliable operation.
3. Can I use an SFX PSU in an ATX case?
Yes, you can use an SFX PSU in an ATX case, but you will need an SFX to ATX adapter bracket. These brackets are readily available and allow you to mount the SFX PSU securely in the ATX case. Make sure the adapter bracket is compatible with your specific case and PSU.
Using an SFX PSU in an ATX case provides several advantages, such as better cable management due to the smaller size and more options for customizing the internal layout. However, some larger ATX cases might not accommodate an SFX PSU with an adapter bracket, so ensure compatibility before purchasing.
4. Are SFX PSUs less powerful than ATX PSUs?
While SFX PSUs are smaller in size, they are not inherently less powerful than ATX PSUs. You can find SFX PSUs with power outputs ranging from 450W to 1000W and even higher, making them suitable for various PC builds, including high-end gaming rigs.
The smaller size is achieved through advanced design and efficient components, not by compromising power. SFX PSUs can provide the same level of performance and stability as their ATX counterparts, allowing you to build powerful PCs without sacrificing space or aesthetics.
5. Are SFX PSUs more expensive than ATX PSUs?
Generally speaking, SFX PSUs are often more expensive than ATX PSUs due to their more complex design and manufacturing process. However, the price difference is becoming less significant as demand for SFX PSUs grows.
The premium price reflects the advantages of SFX PSUs, such as their smaller size, increased efficiency, and higher build quality. Ultimately, the decision of whether the added cost is justified depends on your specific needs and budget.
6. What are some of the best SFX PSUs on the market?
There are several excellent SFX PSUs available, each offering unique strengths and features. Some top contenders include the Corsair SF750, Seasonic Focus GX-650, and the be quiet! Straight Power 11 550W. These units offer high power output, excellent efficiency ratings, and quiet operation.
When selecting an SFX PSU, it’s essential to consider your specific requirements, budget, and desired features. Research and compare different options to find the best SFX PSU for your needs.
7. Where can I buy an SFX PSU?
SFX PSUs are becoming increasingly popular and can be found at various retailers, both online and offline. Major online retailers like Amazon, Newegg, and Best Buy offer a wide selection of SFX PSUs from different brands.
You can also find SFX PSUs at specialized computer component stores and from authorized retailers of specific brands. Ensure you choose a reputable retailer with good customer service and return policies.
Conclusion
Choosing the right PSU can feel daunting, but it’s a crucial decision for any PC builder. You need a power supply that’s reliable, efficient, and capable of delivering the power your components require. We’ve presented a curated list of the best SFX PSUs, taking into consideration factors like performance, features, and price. Whether you’re building a compact PC or simply looking for a high-quality PSU in a smaller form factor, these options offer an excellent blend of power and reliability.
Ultimately, the best SFX PSU for you will depend on your specific needs and budget. Consider the wattage required by your components, the level of efficiency you desire, and any specific features that are important to you. With the information and recommendations provided in this article, you can confidently choose an SFX PSU that will power your PC for years to come.