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be quiet! SFX L Power 600W power supply
be quiet!

be quiet! SFX L Power 600W

Expert rating8.2 / 10

View on bequiet.com
Wattage:
600 W
80 PLUS Rating:
Gold
Modularity:
Fully Modular
ATX Standard:
ATX 2.x

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Manufacturer: be quiet! Last updated: 2026-09-12

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be quiet! SFX L Power 600W Review

be quiet! SFX Power 3 600W 600W 80 Plus Gold fully modular power supply, ATX 2.x certified, SFX form factor, standard PCIe connectors, 3-year warranty, Great Wall/CWT platform.

The be quiet! SFX Power 3 600W is be quiet!'s compact SFX offering for small-form-factor builds that still want the brand's low-noise reputation in a shrunk-down chassis. Rated 600W at 80 PLUS Gold (Cybenetics Gold efficiency / A- noise), it's built on a Great Wall/CWT platform with a 92mm rifle bearing fan. Fully Modular cabling and a 125mm chassis depth make it a realistic fit for a small-form-factor build with a single mid-range GPU, and it's backed by a 3-year warranty.

Efficiency, Noise, and Build Quality

The SFX Power 3 600W carries an 80 PLUS Gold certification and a Cybenetics Gold efficiency / A- noise rating, translating to consistently high real-world efficiency at typical 50% load and low fan noise thanks to its 92mm rifle bearing. It uses a Great Wall/CWT platform, a common approach at this price point that keeps the unit affordable without meaningfully hurting day-to-day reliability.

Connectors and Cabling

Connector layout is 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 4x SATA, 2x Molex. It relies on traditional 6+2-pin PCIe connectors, so an aftermarket or bundled adapter is needed to power a 12VHPWR/12V-2x6 GPU natively. Cabling is fully modular, using standard flat or ribbon cables, with a single +12V rail design that simplifies load balancing across connectors.

Comparison to Alternatives

Against the MSI MAG Ai1600TS PCIE5 (MSI's 1600W Titanium workstation flagship), the be quiet! SFX Power 3 600W matches its wattage class but differs on connector generation and OEM platform, making the choice mostly about brand ecosystem, warranty length (3 years here), and whether native PCIe-only connectors matter for your GPU. Compared with the Corsair RM850x (Corsair's ATX 3.1 850W Gold mainstay), the SFX Power 3 600W sits in the compact/mainstream bracket at 600W, so the decision usually comes down to matching wattage headroom to your actual GPU/CPU combo rather than one being categorically better.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.2 / 10

A solid 600W Gold-rated SFX unit for a small-form-factor build with a single mid-range GPU, held back only by the usual mid-tier compromises on cabling and OEM sourcing.

Best for

  • Builders targeting a small-form-factor build with a single mid-range GPU
  • Anyone who wants fully modular cabling with standard PCIe connectors
  • Systems where a 3-year warranty and Gold-tier efficiency matter

Not for

  • Builds needing more than 600W of continuous headroom
  • Buyers who need a full-size ATX chassis
  • Cost-sensitive builds better served by a lower-tier 80+ Bronze unit

Specifications

What these specs mean

Identity

Brandbe quiet!
Model NumberSFX Power 3 600W

Output and rails

Single +12V RailYes

Form factor and fit

Length125 mm
ColourBlack

Build quality

MTBF100000 hours

Cables

ModularityFully Modular

Monitoring, protection and price

ProtectionsOCP, OVP, OPP, SCP, OTP
Price109.99 USD
Warranty3 years
Wattage600 W
80 PLUS RatingGold
ATX StandardATX 2.x
Form FactorSFX
Cybenetics EfficiencyGold
Cybenetics NoiseA-
12V-2x6 Connectors0
Zero-RPM ModeNo
Sleeved CablesNo
PCIe 8-pin Connectors2
Connector Count1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 4x SATA, 2x Molex
Fan Size92 mm
Fan Model / Bearing92mm rifle bearing
OEM / PlatformGreat Wall/CWT
Cable LengthsATX 350mm, EPS 350mm, PCIe 450mm, SATA 500-700mm

FAQs

What are the key specifications of the be quiet! SFX L Power 600W (600W/80+ Gold/SFX/Compact/Mainstream Tier)?

Key specs for the be quiet! SFX L Power 600W: Wattage 600 W, Modularity Fully Modular, 80 PLUS Rating Gold, Cybenetics Efficiency Gold, Cybenetics Noise A-, Form Factor SFX.

Will the be quiet! SFX L Power 600W (600W/80+ Gold/SFX/Compact/Mainstream Tier) work with my current setup?

The be quiet! SFX L Power 600W (600W/80+ Gold/SFX/Compact/Mainstream Tier) lists Wattage is 600 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the be quiet! SFX L Power 600W (600W/80+ Gold/SFX/Compact/Mainstream Tier) best suited to?

Best suited to: Builders targeting a small-form-factor build with a single mid-range GPU; Anyone who wants fully modular cabling with standard PCIe connectors; Systems where a 3-year warranty and Gold-tier efficiency matter.

What are the drawbacks of the be quiet! SFX L Power 600W (600W/80+ Gold/SFX/Compact/Mainstream Tier)?

Not the best fit for: Builds needing more than 600W of continuous headroom; Buyers who need a full-size ATX chassis; Cost-sensitive builds better served by a lower-tier 80+ Bronze unit.

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