The Best small form factor power supply of 2021 – Top 10 and Rankings

If you’re looking for small form factor power supply but don’t know which one is the best, we recommend the first out of 10 small form factor power supply in this article. Check out how we decide after hours of researching and comparing dozens of items on the market.

SaleRank No. #1
EVGA SuperNOVA 550 GM, 80 Plus Gold 550W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0550-Y1
  • 550W SFX form factor
  • 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC~240VAC) efficiency or higher under typical loads
  • Fan Size/ Bearing: 92mm double Ball Bearing
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
  • 7 year
Rank No. #2
Corsair SF Series, SF600, 600 Watt, SFX, 80+ Platinum Certified, Fully Modular Power Supply (CP-9020182-NA)
  • Compact SFX form-factor to power the world’s best small form factor PCs.
  • 80+ Platinum certified for ultra-high efficiency operation. Continuous output rated temperature C is 40°C
  • Zero RPM fan mode for near-silent operation at low to medium loads.
  • Individually sleeved, fully modular cables make building a great looking PC easy.
  • 92mm Cooling fan delivers low-noise operation even at demanding loads.
SaleRank No. #3
EVGA SuperNOVA 650 GM, 80 Plus Gold 650W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0650-Y1
  • 650W SFX form factor
  • 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC~240VAC) efficiency or higher under typical loads
  • Fan Size/ Bearing: 92mm double Ball Bearing
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
  • 7 year
SaleRank No. #4
EVGA SuperNOVA 450 GM, 80 Plus Gold 450W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0450-Y1
  • 450W SFX form factor
  • 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC~240VAC) efficiency or higher under typical loads
  • Fan Size/ Bearing: 92mm double Ball Bearing
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
  • 7 year
SaleRank No. #5
SilverStone Technology 300W SFX Form Factor 80 Plus Bronze Power Supply (ST30SF-V2-USA)
  • Supports standard SFX form factor and ATX via included bracket
  • 300W Continuous power output at 40℃ operating temperature rated for 24/7 operation
  • 80 plus Bronze level efficiency (82% 85% efficiency at 20% 100% loading)
  • Class-leading single +12V rail
  • Silent running 92mm fan (V2 0)
Rank No. #6
APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W Power Supply
  • APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W Power Supply
  • Cooling: 1 x 80mm Automatically Thermal Sensing Fan. All Cables are Sleeved
  • Connectors: 1 x 20+4pin Main Power, 1 x 4pin 12V(P4), 1 x 6/8pin PCIe, 2 x SATA, 2 x 4pin Molex, 1 x 4pin Floppy
  • Output: +3.3V@12A, +5V@12A, +12V@28A, -12V@0.3A, +5Vsb@2.5A
  • Dimension: 125mm x 100mm x 63.5mm (4.92" x 3.94" x 2.5") - L x W x H
Rank No. #7
SilverStone Technology 500W SFX-L Form Factor 80 Plus Gold Full Modular Lengthened Power Supply with +12V Single Rail, Active PFC (SX500-LG)
  • Silent running 120mm fan with intelligent semi-fanless operation
  • Support SFX-L form factor and ATX via included bracket
  • High efficiency with 80 PLUS Gold certification. Efficiency:87% ~ 90%(20% to 100% loading)
  • 100% modular cables
  • All cables made with flexible flat arrays. Please Note: KIndly refer the User Manual before use.
SaleRank No. #8
Apevia TFX-AP300W Standard Flex ATX 300W Power Supply - 115-230V AC, 1 x 20/24Pin Main Power, 1 x 12V(P4), 3 x Pheripheral, 3 x SATA, 1 x Floppy
  • APEVIA TFX-AP300W Standard 300W Flex ATX Power Supply
  • Input Voltage: 115-230V AC, Input Frequency: 60/50
  • Output: +3.3@12A; +5A@12A; +12V@20A; -12V@0.3A; +5VSB@2.5A
  • 5% Tolerance of 5V, 3.3V & 12V Output
  • Forced Air Ventilation by 1 x 80mm Fan
Rank No. #9
NT1XP YH9D7 255W Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN H255ES-00 D255AS-00 D255E001L F255ES-00
  • Compatible Model: Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems
  • Compatible Model Number: H255ES-00 D255AS-00 D255E001L F255ES-00 L255AS-00 AC255AS-00 AC255ES-00 DPS-255LB HU255AS-00 PS-3261-2DF
  • Compatible Part Number:YH9D7 R7PPW NT1XP 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN
  • Connectors:P1 - 8-Pin ATX Power / P2 - 4-Pin ATX Power
  • Input: 100-240V / 5.0A, 50Hz-60Hz 265W Max Power
Rank No. #10
Apevia Raptor ATX-RA450W 450W ATX Form Factor Power Supply
  • Apevia Raptor ATX-RA450W 450W power supply
  • Standard power connectors: 1* 20/24pin Main, 1* 4/8pin CPU, 3* Molex peripheral, 3* SATA, 1* Floppy
  • Built in 1x 120mm red cooling fan
  • Output: +3.3V (16A), +5V (16A), +12V (32A), -12V (0.3A), +5Vsb (2.5A)
  • Standard safety protections

How Do You Buy The Best small form factor power supply of 2021?

Do you get stressed out thinking about shopping for a great small form factor power supply? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching small form factor power supply, which is why we have assembled a comprehensive list of the greatest small form factor power supply available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for small form factor power supply that you consider buying. Your questions might include the following:

  • Is it worth buying an small form factor power supply?
  • What benefits are there with buying an small form factor power supply?
  • What factors deserve consideration when shopping for an effective small form factor power supply?
  • Why is it crucial to invest in any small form factor power supply, much less the best one?
  • Which small form factor power supply are good in the current market?
  • Where can you find information like this about small form factor power supply?

We’re convinced that you likely have far more questions than just these regarding small form factor power supply, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for small form factor power supply, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible small form factor power supply. Make sure that you are only using trustworthy and credible websites and sources.

We provide an small form factor power supply buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available small form factor power supply currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of small form factor power supply has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features:What bells and whistles matter for an small form factor power supply?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your small form factor power supply.
  5. Customer Ratings: Number ratings grade small form factor power supply objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their small form factor power supply.
  7. Product Quality: You don’t always get what you pay for with an small form factor power supply, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an small form factor power supply is should be an indication of how long it will work out for you.

We always remember that maintaining small form factor power supply information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding small form factor power supply is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.