20 Best Seasonic Flex Atx [2024]

Are you looking for the best Seasonic Flex Atx? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Seasonic Flex Atx.

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# Preview Product
1 Seasonic SSP-300SUG 300W 80 Plus Gold Flex ATX12V Power Supply W Active PFC Seasonic SSP-300SUG 300W 80 Plus Gold Flex ATX12V Power Supply W Active PFC
2 SEASONIC SSP-300SUB 300W 80 PLUS Bronze Flex ATX Power Supply w/ Active PFC F0 & Fully Modular /... SEASONIC SSP-300SUB 300W 80 PLUS Bronze Flex ATX Power Supply w/ Active PFC F0 & Fully Modular /...
3 Seasonic SSP-250SUB 250W 80 PLUS Bronze Flex ATX Power Supply with Active PFC F0 & Fully Modular Seasonic SSP-250SUB 250W 80 PLUS Bronze Flex ATX Power Supply with Active PFC F0 & Fully Modular
4 Seasonic SSP-300SUG SSP-300SUG Flex ATX Power Supply Device - Silver Seasonic SSP-300SUG SSP-300SUG Flex ATX Power Supply Device - Silver
5 SilverStone Technology SST-FX350-G Flex ATX 1U 350 Watt 80 Plus Gold Power Supply with Fixed Cables SilverStone Technology SST-FX350-G Flex ATX 1U 350 Watt 80 Plus Gold Power Supply with Fixed Cables
6 SoNNeT RackMac Mini - 2018 1U Rack Kit for 2 Mac minis, RACK-MIN-2XA SoNNeT RackMac Mini - 2018 1U Rack Kit for 2 Mac minis, RACK-MIN-2XA
7 SPI FSP200-50PL-B 200W Flex ATX 20-PIN 4CM BB Fan Power Supply SPI FSP200-50PL-B 200W Flex ATX 20-PIN 4CM BB Fan Power Supply
8 Seasonic FOCUS Plus 750 Gold SSR-750FX 750W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan... Seasonic FOCUS Plus 750 Gold SSR-750FX 750W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
9 Seasonic FOCUS Plus 850 Gold SSR-850FX 850W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan... Seasonic FOCUS Plus 850 Gold SSR-850FX 850W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
10 Apevia ITX-AP300W Mini-ITX / Flex ATX 300W Solid Power Supply - Black Apevia ITX-AP300W Mini-ITX / Flex ATX 300W Solid Power Supply - Black
11 YEECHUN 240W Replacement Power Supply for Dell Optiplex 3040 3650 3656 5040 7040 (SFF) B240NM-00... YEECHUN 240W Replacement Power Supply for Dell Optiplex 3040 3650 3656 5040 7040 (SFF) B240NM-00...
12 Tecware Flex Custom Mod PSU Extension Cables 16AWG, 30cm, ATX/24-pin, EPS/8-pin, PCI-E/6-pin, PCI-E... Tecware Flex Custom Mod PSU Extension Cables 16AWG, 30cm, ATX/24-pin, EPS/8-pin, PCI-E/6-pin,...
13 Seasonic Focus GM-550, 550W 80+ Gold, Semi-Modular, Fits All ATX Systems, Fan Control in Silent and... Seasonic Focus GM-550, 550W 80+ Gold, Semi-Modular, Fits All ATX Systems, Fan Control in Silent...
14 Seasonic Flagship Prime Series SSR-1000PD 1000W Platinum Full Modular ATX12V & EPS12V 135mm FDB Fan... Seasonic Flagship Prime Series SSR-1000PD 1000W Platinum Full Modular ATX12V & EPS12V 135mm FDB...
15 G.Skill 650 Watt Power Supply, 80 Plus Bronze Semi Modular Gaming Desktop PC PSU with 120mm Quiet... G.Skill 650 Watt Power Supply, 80 Plus Bronze Semi Modular Gaming Desktop PC PSU with 120mm Quiet...
16 SilverStone Technology 350 Watt Flex ATX Power Supply with Fixed Cables and 80 Plus Gold with 6Pin... SilverStone Technology 350 Watt Flex ATX Power Supply with Fixed Cables and 80 Plus Gold with...
17 Seasonic FOCUS Plus 650 Gold SSR-650FX 650W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan... Seasonic FOCUS Plus 650 Gold SSR-650FX 650W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
18 Seasonic PRIME TX-1000, 1000W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and... Seasonic PRIME TX-1000, 1000W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and...
19 COMeap PCIe 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Adapter Cable for Seasonic Power... COMeap PCIe 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Adapter Cable for Seasonic Power...
20 Enhance Flex 600W Power Supply ENP-7660B, New, 1-Year Warranty. Enhance Flex 600W Power Supply ENP-7660B, New, 1-Year Warranty.
SaleBestseller No. 1
Seasonic SSP-300SUG 300W 80 Plus Gold Flex ATX12V Power Supply W Active PFC
  • SSP-300SUG Active PFC This is a Seasonic industrial power supply meeting important EMI, EMC and
Bestseller No. 2
SEASONIC SSP-300SUB 300W 80 PLUS Bronze Flex ATX Power Supply w/ Active PFC F0 & Fully Modular /...
  • SATA-ready
  • Fully modular
  • High efficiency and reliability
  • Low ripple and noise
  • Super low noise fan control
Bestseller No. 3
Seasonic SSP-250SUB 250W 80 PLUS Bronze Flex ATX Power Supply with Active PFC F0 & Fully Modular
  • Fully modular
  • High efficiency and reliability
  • Low ripple and noise
  • Super low noise fan control
  • Short circuit protection on all outputs
Bestseller No. 4
Seasonic SSP-300SUG SSP-300SUG Flex ATX Power Supply Device - Silver
  • Flex ATX 12V V2.31 & EPS 12V /
  • Output 25A / 80 PLUS Gold,
  • 87% / 12 cm fan
Bestseller No. 5
SilverStone Technology SST-FX350-G Flex ATX 1U 350 Watt 80 Plus Gold Power Supply with Fixed Cables
  • Support standard Flex ATX form factor
  • High efficiency with 80 PLUS Gold certification
  • 350W continuous power output at 40℃ operating temperature rated for 24/7 operation
  • Class-leading single +12V rail. Active PFC
  • Support PCIe 6pin connector
Bestseller No. 6
SoNNeT RackMac Mini - 2018 1U Rack Kit for 2 Mac minis, RACK-MIN-2XA
  • Supports older and the latest Mac minis
  • New ventilation system for higher end hardware
  • 1U of height
  • Standard mounting points
  • Open Cable Access — Enables you to connect and disconnect cables easily
Bestseller No. 7
SPI FSP200-50PL-B 200W Flex ATX 20-PIN 4CM BB Fan Power Supply
  • 1U Flex form factor ATX Power Supply
  • Manual Swithc 110/220 VAC
  • ATX 20 Pin, HDD 4 Pin Connector x 3, FDD 4 Pin Connector x 1, 12V AUX x 1
  • 200 Watts Max Output @ 25°
Bestseller No. 8
Seasonic FOCUS Plus 750 Gold SSR-750FX 750W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
  • COMPACT SIZE - 140 MM DEEP; High power output to size ratio.
  • FULL MODULAR; use only the cables you need to reduce clutter and improve airflow for a better ventilated system.
  • 80 PLUS GOLD; 87% efficient at 20% load, 90% efficient at 50% load, and 87% efficient at 100% load.
  • HYBRID SILENT FAN CONTROL; The industry's first, Seasonic patented, advanced three-phased thermal control achieves optimal between silence and...
  • 10 YEAR WARRANTY; Our commitment to superior quality.
Bestseller No. 9
Seasonic FOCUS Plus 850 Gold SSR-850FX 850W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
  • COMPACT SIZE - 140 mm DEEP; High power output to size ratio
  • FULL MODULAR; use only the cables you need to reduce clutter and improve airflow for a better ventilated system.
  • 80 PLUS GOLD; 87% efficient at 20% load, 90% efficient at 50% load, and 87% efficient at 100% load.
  • HYBRID SILENT FAN CONTROL; The industry's first, Seasonic patented, advanced three-phased thermal control achieves optimal between silence and...
  • 10 YEAR WARRANTY; Our commitment to superior quality.
SaleBestseller No. 10
Apevia ITX-AP300W Mini-ITX / Flex ATX 300W Solid Power Supply - Black
  • Standard Mini-ITX / FLEX ATX type, Maximum Power: 300W
  • Cooling: Forced Air Ventilation by 1 x 40mm Double Ball Bearing Fan
  • Connectors: 1 x 20+4pin Main Power, 1 x 4pin 12V(P4), 2 x SATA, 2 x 4pin Molex, 1 x 4pin Floppy
  • Output: +3.3V@12A, +5V@12A, +12V@20A, [email protected], [email protected]
  • Dimension: 150mm x 81.5mm x 40.5mm (5.9" x 3.21" x 1.59") - L x W x H
Bestseller No. 11
YEECHUN 240W Replacement Power Supply for Dell Optiplex 3040 3650 3656 5040 7040 (SFF) B240NM-00...
  • Compatible Model: Replacement Power Supply for Dell Optiplex 3040 3650 3656 5040 7040 (SFF) B240NM-00 HU240AM-00 AC240EM-00
  • Compatible Part Number: THRJK 4GTN5 4R1KT D7GX8 HGRMH 2P1RD H62JR 3RK5T 6WX7D 0M1C3 J1J77 RKTF0 20WFG 0THRJK 04GTN5 RWMNY 20WFG RWMN B024NM-00...
  • Compatible Part Number: THRJK 4GTN5 4R1KT D7GX8 HGRMH 2P1RD H62JR 3RK5T 6WX7D 0M1C3 J1J77 RKTF0 20WFG 0THRJK 04GTN5 RWMNY 20WFG RWMN B024NM-00...
  • Input: 100-127V~/7. 0A Max Output Power: 240W. One year warranty. For any reason you're not completely satisfied with the product, you can ask for a...
  • 【Warranty】Comes with a 12-month worry-free Warranty if you have any pre-sale or after-sale questions please feel free to contact us, we will be...
Bestseller No. 12
Tecware Flex Custom Mod PSU Extension Cables 16AWG, 30cm, ATX/24-pin, EPS/8-pin, PCI-E/6-pin, PCI-E...
  • Copper+Brass High Current Contact Terminals: 30cm in length, 16 AWG Copper Cables, Compatible with 1600W+ Power Supplies
  • Durable: The cable sleeves are made of High-density Premium Soft PET, Heatshrink-free, and has Molded Connectors for Compatibility.
  • Package includes: 1 x 24pin ATX, 1 x 8pin(4+4) EPS and 2 x 8pin(6+2) PCI-E
  • Includes cable combs: 3 x 24 pin , 9 x 8 pin and 3 x 6 pin
SaleBestseller No. 13
Seasonic Focus GM-550, 550W 80+ Gold, Semi-Modular, Fits All ATX Systems, Fan Control in Silent and...
  • COMPACT SIZE: 140 MM deep fits ALL ATX systems.
  • SEMI MODULAR: Provides the most common connections while allowing flexibility on the peripherals to reduce clutter and maximize airflow for a better...
  • 80 PLUS GOLD: Less energy gets wasted during power conversion; Cut down your electricity usage and be .
  • SMART and SILENT FAN CONTROL: 120 mm FDB fan inside is regulated by Seasonic Smart and Silent Fan Control technology(S2FC), which optimizes the fan...
  • 7 YEAR WORRY-FREE : Our commitment to superior quality.
Bestseller No. 14
Seasonic Flagship Prime Series SSR-1000PD 1000W Platinum Full Modular ATX12V & EPS12V 135mm FDB Fan...
  • High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil
  • The Seasonic PRIME Series is designed with very favorable level of acoustics and it uses carefully selected components and innovative circuit design...
  • Seasonic's latest design keeps the output voltage within a very tight range, achieving under 0.5 % (1 % for 1000 W and above) load regulation
  • Seasonic's engineers have implemented a new design feature, where instead of cables; the back panel and the PCB (Printed Circuit Board) are connected...
  • 10 Years Warranty
SaleBestseller No. 15
G.Skill 650 Watt Power Supply, 80 Plus Bronze Semi Modular Gaming Desktop PC PSU with 120mm Quiet...
  • 650W ATX Power Supply.A solid foundation for a gaming rig, media creator, workstations, and even for next-generation system build. Including a 120mm...
  • 80 PLUS Bronze Certified PSU. The 80 PLUS Gold certified power supply provides ultra-high power efficiency with 85% or higher under typical loads,...
  • Semi Modular Cable Design. The semi-modular cable design allows use of only the cables you need for reduced system clutter, improved air flow, and...
  • Durable and Stable PSU from the Core.Assembled with tier 1 Japanese brand capacitors and premium quality components to ensure a extended...
  • Comprehensive Power Protection: Heavy duty protection from electrical and thermal irregularities with Over Voltage/Power/Temperature Protection, and...
SaleBestseller No. 16
SilverStone Technology 350 Watt Flex ATX Power Supply with Fixed Cables and 80 Plus Gold with 6Pin...
  • Support Standard flex ATX Form Factor
  • High efficiency with 80 PLUS Gold certification
  • 350W Continuous power output at 40℃ operating temperature rated for 24/7 operation
  • Class-leading single +12V rail
  • Support PCIe 6pin connector
Bestseller No. 17
Seasonic FOCUS Plus 650 Gold SSR-650FX 650W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan...
  • Compact size - 140 mm deep; High power output to size ratio
  • Full modular; use only the cables you need to reduce clutter and improve airflow for a better ventilated system
  • 80 Plus Gold; 87% efficient at 20% load, 90% efficient at 50% load, and 87% efficient at 100% load
  • Hybrid silent fan control; The industry's first, Seasonic patented, advanced three-phased thermal control achieves optimal between silence and...
  • 10 year warranty; Our commitment to superior quality
Bestseller No. 18
Seasonic PRIME TX-1000, 1000W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and...
  • Micro Tolerance Load Regulation (under 0. 5 %): this impressive electrical performance and stability makes this power supply an ideal choice for...
  • Full modular - use only the cables you need to reduce clutter and improve airflow for a better ventilated system.
  • 80 plus Titanium - less energy gets wasted during power conversion; cut down your electricity usage and be Eco-Friendly .
  • PREMIUM HYBRID FAN CONTROL: Unsurpassed silent performance in Fanless Mode. The fan control button at the back of the power supply allows users to...
  • 12 year worry-free WARRANTY:: Our commitment to superior quality.
Bestseller No. 19
COMeap PCIe 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Adapter Cable for Seasonic Power...
  • 『PCIe 8P - Dual 8P(6+2)』PCIe 8 pin male end to plug into the power supply (NOTE: it is PCIe 8 pin, not CPU 8 pin) and two PCIe 8 pin(6+2) male...
  • 『Only designed for graphics vedio cards, it doesn't work with motherboards』Compatible with 6-pin & 8-pin graphics cards from popular manufacturers...
  • 『Compatibility』Compatible with (X-1050XM2/X-1250XM2) (SS-660/760/860XP2 series) (X-Series - X-650 KM3/X-750 KM3/X-850 KM3) (SS-1050/1200XP3)...
  • 『Parameter』Length(including connectors): 25-inch + 9-inch(63cm+23cm), Gauge: 1007-18AWG(standard tin-coating copper wire), Quantity: 1pcs,...
  • 『Note』This cable was only designed for the brand and model as listed in the 3rd Point. If you use other incompatible brand PSUs or types, it will...
Bestseller No. 20
Enhance Flex 600W Power Supply ENP-7660B, New, 1-Year Warranty.
  • Enhance Flex 600W power supply ENP-7660B, NEW, 1-year warranty.
  • WxHxD: 3.3" x 1.55" x 5.9"
  • 20/24pin +(4+4pin) +2 x (6+2pin for VGA) + 3 Molex +1 FDD + 4 x SATA connectors

Having trouble finding a great Seasonic Flex Atx?

This problem is well understood by us because we have gone through the entire Seasonic Flex Atx research process ourselves, which is why we have put together a comprehensive list of the best Seasonic Flex Atxs available in the market today.

After hours of searching and using all the models on the market, we have found the best Seasonic Flex Atx for 2023. See our ranking below!

How Do You Buy The Best Seasonic Flex Atx?

Do you get stressed out thinking about shopping for a great Seasonic Flex Atx? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching Seasonic Flex Atx, which is why we have assembled a comprehensive list of the greatest Seasonic Flex Atx available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Seasonic Flex Atx that you consider buying. Your questions might include the following:

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

We’re convinced that you likely have far more questions than just these regarding Seasonic Flex Atx, 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 Seasonic Flex Atx, 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 Seasonic Flex Atx. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an Seasonic Flex Atx 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 Seasonic Flex Atx 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 Seasonic Flex Atx 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 Seasonic Flex Atx?
  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 Seasonic Flex Atx.
  5. Customer Ratings: Number ratings grade Seasonic Flex Atx objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Seasonic Flex Atx.
  7. Product Quality: You don’t always get what you pay for with an Seasonic Flex Atx, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Seasonic Flex Atx is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining Seasonic Flex Atx 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 Seasonic Flex Atx is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What is a flex ATX power supply?

A: Thank you for supporting the work I put into this site!) Flex ATX PSU is a small form factor power supply that is mostly used in slim SFF PCs, mini-ITX cases, HTPC cases, and 1U rack-mount server chassis. It is a low-profile PSU having a slim design, but is a bit longer than other small form factor PSUs, including SFX and SFX-L power supplies.

Q: What is the wattage of the SeaSonic ssp-300sug flex ATX PSU?

A: Seasonic SSP-300SUG Flex ATX PSU Specifications Wattage 300W 12V Rail 25A, Single Fan Size 40mm 80 Plus Certification Gold PCI-E Connector NA 1 more rows …

Q: Is flex ATX PSU loud?

A: However, if you find your Flex ATX PSU very loud, then you can replace it better 40mm fans from top brands that are very quiet and delivers great performance. Flex ATX PSUs are also used in many of the slim SFF desktops and workstations from HP, Dell, IBM, SuperMicro, etc.

Q: Is the fsp400-60fggba a reliable 300W flex ATX PSU?

A: Overall, a reliable 300W Flex ATX PSU for normal workloads, servers and for use in smaller builds. FSP is the company that originally come with Flex ATX Power Supply design, and later on, it was included in the standard form factors. Here we have FSP400-60FGGBA which is a 400W Flex ATX Power Supply, with 80 Plus Gold certification.