10 Best Sfx Power Supplies 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing 215 products, scanning 1075 reviews, spending more than 36 hours of research and speaking with our test users, we think the EVGA SuperNOVA 650 GM is the one of the Best Sfx Power Supply on the market.

# Image Name Brand Price
1
⭐Best Choice
EVGA SuperNOVA 650 GM
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 Check price EVGA $$$$$ Check price
2 Seasonic FOCUS GX-550 Seasonic FOCUS GX-550, 550W, Full-Modular, Fan Control in Fanless, Silent, and Cooling Mode, Perfect Power Supply for Gaming and Various Application, SSR-550FX. Check price Seasonic $$$$$ Check price
3 EVGA SuperNOVA 550 GM EVGA SuperNOVA 550 GM, 80 Plus Gold 550W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0550-Y1 Check price EVGA $$$$$ Check price
4 SilverStone Technology Silverstone SX700-PT SFX 700W SilverStone Technology Silverstone SX700-PT SFX 700W, High Efficiency with 80 Plus Platinum Certification Check price SilverStone Technology $$$$$ Check price
5
👑Premium Pick
SilverStone Technology 800W SFX-L
SilverStone Technology 800W SFX-L, 80 Plus Titanium 100% Modular Power Supply with Japanese Capacitors SX800-LTI-USA, SST-SX800-LTI-USA Check price SilverStone Technology $$$$$ Check price
6
💲Best value for the money
EVGA SuperNOVA 450 GM
EVGA SuperNOVA 450 GM, 80 Plus Gold 450W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0450-Y1 Check price EVGA $$$$$ Check price
7 SilverStone Technology SST-SX700-G 700W SFX Fully Modular 80 Plus Gold SilverStone Technology SST-SX700-G 700W SFX Fully Modular 80 Plus Gold PSU with Improved 92mm Fan and Japanese Capacitors. Check price SilverStone Technology $$$$$ Check price
8 EVGA 550 B5 EVGA 550 B5, 80 Plus BRONZE 550W, Fully Modular, EVGA ECO Mode, 5 Year Warranty, Compact 150mm Size, Power Supply 220-B5-0550-V1 Check price EVGA $$$$$ Check price
9 SilverStone Technology 450W SFX Form Factor 80 Plus Bronze Power SilverStone Technology 450W SFX Form Factor 80 Plus Bronze Power Supply (ST45SF-V3-USA), SST-ST45SF-V3-USA Check price SilverStone Technology $$$$$ Check price
10 SilverStone Technology 500W SFX-L Form Factor 80 Plus Gold Full SilverStone Technology 500W SFX-L Form Factor 80 Plus Gold Full Modular Lengthened Power Supply with +12V Single Rail, Active PFC (SX500-LG) Check price SilverStone Technology $$$$$ Check price

EVGA SuperNOVA 650 GM – Best Overall Sfx Power Supply

EVGA SuperNOVA 650 GM
  • 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

Seasonic FOCUS GX-550

Seasonic FOCUS GX-550
  • COMPACT SIZE: 140 MM deep fits ALL ATX systems.
  • FULL MODULAR: Use only the cables you need to reduce clutter to maximize airflow for a better ventilated system.
  • 80 PLUS GOLD: 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 customize cooling needs by selecting between Seasonic S2FC (fan control without Fanless Mode) and S3FC (fan control including Fanless Mode).
  • 10 YEAR WORRY-FREE WARRANTY: Our commitment to superior quality.

EVGA SuperNOVA 550 GM

EVGA SuperNOVA 550 GM
  • 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

SilverStone Technology Silverstone SX700-PT SFX 700W

SilverStone Technology Silverstone SX700-PT SFX 700W
  • Support Standard SFX form factor
  • Silent running 92mm FDB fan with 18 dBA minimum
  • All Japanese Capacitors
  • High efficiency with 80 PLUS Platinum certification
  • Class-leading single +12V rail
  • Strict 3% Voltage regulation and low ripple & noise
  • 100% modular cables
  • All cable with flexible flat arrays

SilverStone Technology 800W SFX-L – Premium Pick

SilverStone Technology 800W SFX-L
  • 800W Continuous power output rated for 24/7 operation. Class-leading single +12V rail with 66a. Strict 3% Voltage regulation and low ripple & noise
  • High quality construction with all Japanese Capacitors
  • High efficiency with 80 PLUS Titanium certification
  • Silent running 120mm fan with advanced semi-fan less operation. Support Quad PCI-E 8/6pin connectors
  • 100% modular short cables with flexible flat arrays. Sfx-l form Factor for use in small form Factor computers

EVGA SuperNOVA 450 GM – Best Budget Sfx Power Supply

EVGA SuperNOVA 450 GM
  • 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

SilverStone Technology SST-SX700-G 700W SFX Fully Modular 80 Plus Gold

SilverStone Technology SST-SX700-G 700W SFX Fully Modular 80 Plus Gold
  • Support Standard SFX form factor
  • Silent running 92mm FDB fan with 18 dBA minimum. All Japanese Capacitors
  • 100% modular cables. All cable with flexible flat arrays
  • High efficiency with 80 PLUS Gold certification
  • Class-leading single +12V rail. Strict 3% Voltage regulation and low ripple & noise

EVGA 550 B5

EVGA 550 B5
  • 80 PLUS Bronze certified, with 89% efficiency or higher under typical loads
  • Fully Modular to reduce clutter and improve airflow
  • EVGA ECO Intelligent Thermal Control System eliminates fan noise at low to medium loads
  • 5 Year and unparalleled EVGA Customer Support
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, SCP, and OTP

SilverStone Technology 450W SFX Form Factor 80 Plus Bronze Power

SilverStone Technology 450W SFX Form Factor 80 Plus Bronze Power
  • Supports standard SFX form factor and ATX via included bracket
  • 450W Continuous power output at 50℃ temperature rated for 24/7 operation (V2.0)
  • 450W Continuous power output at 40℃ temperature rated for 24/7 operation (V3.0)
  • 80 plus Bronze level efficiency (82%85% efficiency at 20%100% loading)
  • Class-leading single +12V rail with 36a
  • Silent running 80mm fan (V2.0)
  • Silent running 92mm fan (V3.0)

SilverStone Technology 500W SFX-L Form Factor 80 Plus Gold Full

SilverStone Technology 500W SFX-L Form Factor 80 Plus Gold Full
  • 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.

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