SFX power supplies are a compact form factor power supply that can fit in small form factor cases, making them an excellent choice for building a compact system. These power supplies are becoming more and more popular as PC builders look for smaller cases that can still pack a punch.
When looking for the best SFX power supply, there are a few critical things you should consider. One of the most important factors is the wattage of the power supply. You need to make sure that the power supply you choose can deliver enough power to your components to ensure that your system runs smoothly.
Another factor to consider is the efficiency of the power supply. An efficient power supply will waste less power and generate less heat, which can help to keep your system running cool and quiet. Finally, you should also consider the quality of the components used in the power supply, as this can affect the reliability and longevity of the unit.
We spent hours researching and testing various SFX power supplies to identify the ones that offer the best combination of wattage, efficiency, and component quality. In the following sections, we’ll take a closer look at our top picks and what makes them stand out from the competition.
Best SFX Power Supplies
We understand that having a reliable power supply is crucial for any PC build, especially for those who want to build a compact system. That’s why we’ve compiled a list of the best SFX power supplies on the market. These power supplies are designed to fit in small form factor cases without compromising on performance or efficiency. Our team has researched and tested numerous SFX power supplies to bring you this list of top-performing products. Whether you’re building a gaming PC or a workstation, we’ve got you covered with the best SFX power supplies available.
SilverStone SX700-PT SFX 700W
If you’re looking for a high-quality SFX power supply, the SilverStone SX700-PT is an excellent option to consider.
Pros
- The power supply has a compact SFX form factor and is fully modular, making it easy to install and manage cables.
- The single +12V rail provides class-leading power output, with strict voltage regulation and low ripple and noise.
- The power supply is incredibly efficient, with an 80PLUS Platinum certification and all Japanese capacitors.
Cons
- While the included cables are flexible, they are a bit thicker than some other SFX power supplies, which can make cable management a bit challenging in some cases.
- The fan can be a bit loud under heavy loads, which may be a concern for users who prioritize quiet operation.
- The power supply is a bit on the expensive side, which may be a drawback for budget-conscious buyers.
Overall, the SilverStone SX700-PT is an excellent SFX power supply that provides reliable, efficient power with a compact form factor. If you’re willing to pay a bit more for a high-quality power supply, this is definitely one to consider.
In terms of our experience with the product, we found that the power supply was easy to install and manage, thanks to its modular design and compact size. The power output was consistently stable, with no noticeable voltage fluctuations or noise. The included cables were a bit thicker than we expected, but they were still flexible enough to work with in most cases. The fan did get a bit loud under heavy loads, but it wasn’t a major issue for us. Overall, we were very satisfied with the SilverStone SX700-PT and would recommend it to anyone in need of a high-quality SFX power supply.
Corsair SF1000L
If you’re looking for a compact, high-wattage power supply for your small-form-factor PC, the Corsair SF1000L is a great choice. We recommend it for its high efficiency, modular design, and quiet operation.
Pros
- This power supply delivers 1000W of continuous power, which is ideal for power-dense small-form-factor PCs, or for saving space in larger builds.
- The fully modular design and micro-fit PSU connectors make cable management easy and compatibility in small cases.
- The 120mm rifle bearing PWM fan delivers quiet, powerful cooling, with Zero RPM fan mode for near-silent operation at lower loads.
Cons
- The price point is a bit high compared to other SFX power supplies on the market.
- The fan can be a bit noisy at higher loads.
- Some users have reported issues with the cables being tangled or difficult to connect.
In our experience, the Corsair SF1000L is a reliable, high-quality power supply that delivers consistent power to even the most demanding systems. The fully modular design makes it easy to install and manage cables, and the 120mm fan keeps things cool and quiet. However, the price point may be a bit high for some users, and the fan can be a bit noisy at higher loads. Additionally, some users have reported issues with tangled cables or difficulty connecting them. Overall, we recommend the Corsair SF1000L for anyone looking for a high-wattage, efficient power supply for their small-form-factor PC.
Lian Li SP 750 Performance SFX Form Factor Power Supply
We highly recommend the Lian Li SP 750 Performance SFX Form Factor Power Supply for anyone looking for a reliable and powerful power supply for their small form factor build.
Pros
- Fully modular braided cables for a clean look
- Japanese electrolytic capacitors for high durability
- 80 PLUS Gold efficiency
Cons
- Zero RPM mode only under 40% load for silent operation
- Some units may be defective and cause issues
- Can be noisy at times
The Lian Li SP 750 is a great power supply for small form factor builds. The fully modular braided cables make cable management a breeze, and the Japanese electrolytic capacitors ensure high durability and long-lasting performance. The 80 PLUS Gold efficiency rating means that it is highly efficient and will save you money on your electricity bill.
One downside is that the zero RPM mode only kicks in under 40% load, so it may not always be silent. Additionally, some units may be defective and cause issues, so be sure to test it thoroughly upon arrival. Lastly, it can be noisy at times, so keep that in mind if you are looking for a completely silent build.
Overall, the Lian Li SP 750 Performance SFX Form Factor Power Supply is a great choice for anyone looking for a reliable and efficient power supply for their small form factor build.
FSP Dagger Pro 850W Mini ITX Solution/SFX 12V / Micro ATX 80 Plus Gold Certified Full Modular VR / 4K Ready Gaming Power Supply (SDA2-850)
If you’re looking for a reliable and powerful SFX power supply, the FSP Dagger Pro is a great option.
Pros
- The compact size makes it perfect for small form factor builds.
- The fully modular design allows for easy cable management and customization.
- The 80 PLUS Gold certification ensures high efficiency and low energy waste.
Cons
- The price point is higher than some other SFX power supplies on the market.
- The fan can be a bit noisy at higher loads.
- The cables may be a bit too long and bulky for some builds.
We recently had the chance to test out the FSP Dagger Pro, and we were impressed with its performance. The compact size makes it a great choice for smaller builds, and the fully modular design allowed us to customize our cable management to our liking.
The 80 PLUS Gold certification ensures high efficiency and low energy waste, which is a big plus for those concerned about their energy consumption. However, we did notice that the fan can be a bit noisy at higher loads, which may be a concern for those who prioritize quiet builds.
The cables are also a bit longer and bulkier than some other SFX power supplies, which may be a concern for those with limited space in their builds. However, we found that with a bit of effort, we were able to make it work for our build.
Overall, we would recommend the FSP Dagger Pro to those looking for a reliable and powerful SFX power supply for their small form factor builds.
EVGA SuperNOVA 750 GM
We highly recommend the EVGA SuperNOVA 750 GM for anyone in need of a reliable SFX power supply.
Pros
- The SFX form factor is perfect for small builds and the included bracket also supports ATX form factor.
- 100% Japanese capacitors ensure long-term reliability.
- Supports ECO mode + FDB fan for quiet operation.
Cons
- The cables may be too short for some builds, so extensions may be necessary.
- Some users may find the price to be a bit high compared to other SFX power supplies.
- The power supply may not be compatible with all devices, so be sure to check before purchasing.
We were impressed with the overall performance of the EVGA SuperNOVA 750 GM. The fully modular design made cable management a breeze, and the included Power ON Self Tester gave us peace of mind knowing that everything was working properly.
The ECO mode and FDB fan allowed us to keep our PC running quietly, even during demanding tasks. The 10-year warranty and 100% Japanese capacitors also gave us confidence in the long-term reliability of the power supply.
However, the cables were a bit short for our build, so we had to purchase extensions. Additionally, the price may be a bit steep for some users, but we believe the quality and reliability of the EVGA SuperNOVA 750 GM make it worth the investment.
Overall, we highly recommend the EVGA SuperNOVA 750 GM for anyone in need of a reliable SFX power supply.
Seasonic Focus SGX-650(2021)
If you’re looking for a powerful and versatile SFX power supply, the Seasonic Focus SGX-650(2021) is a great option for you.
Pros
- Compact size makes it perfect for small form factor builds.
- Full modular design allows you to use only the cables you need.
- Hybrid fan control ensures silent performance in Fanless Mode.
Cons
- Some users may find it a bit pricey compared to other SFX power supplies.
- The included cables may be a bit short for some builds.
- The power supply may get a bit hot under heavy loads.
We have been using the Seasonic Focus SGX-650(2021) for a while now, and we are impressed with its performance. The compact size of the power supply makes it perfect for small form factor builds, and the full modular design allows you to use only the cables you need, reducing clutter and maximizing airflow for a better ventilated system.
The Seasonic hybrid fan control is always enabled to optimize the cooling according to necessity, and we were impressed with its silent performance in Fanless Mode. It functions in three operational stages: Fanless Mode, Silent Mode, and Cooling Mode, ensuring that your system remains cool and quiet even under heavy loads.
While some users may find it a bit pricey compared to other SFX power supplies, we think that the Seasonic Focus SGX-650(2021) is worth the investment. The included cables may be a bit short for some builds, but this is a minor inconvenience that can be easily solved with cable extensions.
Overall, we highly recommend the Seasonic Focus SGX-650(2021) to anyone looking for a powerful and versatile SFX power supply. With its compact size, full modular design, and hybrid fan control, it is a great choice for any small form factor build.
Cooler Master V850 SFX Gold Full Modular
If you’re looking for a high-quality SFX power supply, the Cooler Master V850 SFX Gold Full Modular might be the right choice for you.
Pros
- The SFX form factor makes it compatible with all SFX cases and suitable for mini-ITX system builds.
- The included SFX-to-ATX bracket allows users to install the V SFX Gold securely to an ATX case.
- The thicker 16 AWG PCI-e cables allow for higher currents, thereby improving both efficiency and safety.
Cons
- The rubber wires are stiff and could be replaced with braided sleeving.
- The 24+8 pin cable is too short and may require an adapter to reach the motherboard.
- The cables included have bad quality and only multi-PCIe cables are included.
We were impressed by the V850 SFX Gold’s full-modular cabling, which reduces clutter, increases airflow, and improves overall efficiency and thermal performance. The FDB fan is quiet and efficient, and the 80 Plus Gold efficiency rating ensures that power is delivered with high efficiency.
The unit is compatible with all SFX cases and suitable for mini-ITX system builds, and the included SFX-to-ATX bracket allows users to install the V SFX Gold securely to an ATX case. The thicker 16 AWG PCI-e cables allow for higher currents, thereby improving both efficiency and safety.
However, we did find that the rubber wires are stiff and could be replaced with braided sleeving, and the 24+8 pin cable is too short and may require an adapter to reach the motherboard. Additionally, the cables included have bad quality and only multi-PCIe cables are included.
Overall, the Cooler Master V850 SFX Gold Full Modular is an excellent choice for those looking for a high-quality SFX power supply that delivers the same great features as the V series in SFX form factor. With a 10-year warranty, you can be confident in your purchase.
Buying Guide
When looking for the best SFX power supply, there are a few important factors to consider. We want to make sure that you are well-informed before making a purchase, so we have put together a guide to help you choose the right product.
Wattage
One of the most important factors to consider when choosing an SFX power supply is the wattage. You will want to make sure that the power supply can handle the power requirements of your system. You can determine the wattage you need by adding up the power requirements of all the components in your system. Be sure to choose a power supply that has a wattage that is higher than your total power requirements to ensure that it can handle the load.
Efficiency
Another important factor to consider is the efficiency of the power supply. The efficiency of a power supply refers to how much power it can deliver to your system compared to how much power it draws from the wall. A more efficient power supply will waste less energy and generate less heat, which can help to prolong the life of your components.
Modular or Non-Modular
SFX power supplies can come in modular or non-modular versions. A modular power supply allows you to detach unused cables, which can help to reduce clutter in your system and improve airflow. A non-modular power supply has all of its cables permanently attached, which can make cable management more difficult.
Size
SFX power supplies are smaller than standard ATX power supplies, which makes them ideal for small form factor builds. However, it is important to make sure that the power supply you choose will fit in your case. Be sure to check the dimensions of the power supply and your case to ensure that it will fit properly.
Certification
Finally, you will want to consider the certification of the power supply. A power supply that is certified by 80 Plus has been tested and found to be at least 80% efficient at a range of loads. There are also higher levels of certification, such as 80 Plus Bronze, Silver, Gold, and Platinum, which indicate higher levels of efficiency. Choosing a power supply with a higher level of certification can help to ensure that you are getting a high-quality product.
In summary, when choosing a SFX power supply, you should consider the wattage, efficiency, modular or non-modular design, size, and certification. By taking these factors into account, you can ensure that you choose the best power supply for your system.
Frequently Asked Questions
What are some reliable brands for SFX power supplies?
When it comes to SFX power supplies, there are a few reliable brands that we recommend. Some of the top brands include Corsair, SilverStone, and Seasonic. These brands have a proven track record of producing high-quality power supplies that are reliable and efficient.
What is the maximum wattage available for SFX power supplies?
The maximum wattage available for SFX power supplies varies depending on the brand and model. However, most SFX power supplies range from 300 watts to 750 watts. It’s important to note that higher wattage power supplies are generally more expensive.
What is the best SFX power supply for high-end GPUs like the RTX 3080?
For high-end GPUs like the RTX 3080, we recommend going with a power supply that has a wattage of at least 650 watts. Some of the best SFX power supplies for high-end GPUs include the Corsair SF750, the SilverStone SX800-LTI, and the Seasonic SGX-650.
Which SFX power supply is recommended for a compact build?
For a compact build, we recommend going with a power supply that has a maximum wattage of 500 watts. Some of the best SFX power supplies for compact builds include the Corsair SF450, the SilverStone SX500-LG, and the Seasonic SGX-500.
Are SFX power supplies generally reliable and efficient?
Yes, SFX power supplies are generally reliable and efficient. They are designed to be compact and efficient, making them ideal for small form factor builds. However, it’s important to choose a power supply from a reputable brand to ensure that it is reliable and efficient.
Can you recommend a high-wattage SFX power supply for a powerful gaming PC?
If you’re looking for a high-wattage SFX power supply for a powerful gaming PC, we recommend going with the Corsair SF750 or the SilverStone SX800-LTI. These power supplies have a wattage of 750 watts, making them ideal for high-end gaming PCs.
