Corsair

Corsair SF1000L

Expert rating8.2 / 10

Wattage:: 1000 W
80 PLUS Rating:: Gold
Modularity:: Fully Modular
ATX Standard:: ATX 3.1

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Manufacturer: Corsair Last updated: 2026-09-12

Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0) Review

If you're searching for the Corsair SF1000L, or just looking for a solid 1000W 80 PLUS Gold PSU in a SFX-L form factor, here's the full rundown on specs, price, and how it stacks up.

Short answer: the SF1000L is a fully modular 1000W unit built to the ATX 3.0 spec, and we'd recommend it if you want Gold-tier efficiency at this wattage without chasing a flagship price tag.

Efficiency and Build Quality

The SF1000L carries an 80 PLUS Gold certification and Cybenetics Gold efficiency / A noise, built on a CWT platform. Its 92mm FDB, near-silent under 50% load keeps noise down, with Zero-RPM fan-stop under light loads.

Connectors and Cabling

You get 1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6 (600W), 4x PCIe 6+2-pin, 6x SATA, 2x Molex. Cable lengths run 24-pin 550mm, EPS 650mm, 12V-2x6 600mm, PCIe 650mm, SATA 750mm, and the cables are standard black ribbon/flat, not sleeved. It's rated for a 17ms hold-up time and backed by OCP, OVP, OPP, SCP, OTP, UVP protection circuitry.

Comparison to Alternatives

Compared to the Corsair SF750, the SF1000L lands in the same efficiency tier at a different capacity, so the choice mostly comes down to how much wattage headroom you actually need. It's also worth cross-shopping against the ASUS ROG Loki SFX-L 850W Platinum if you're weighing Gold-tier options in this wattage class; both land in a similar price bracket, so the deciding factor usually comes down to form factor, cable sleeving, and warranty length.

Specifications

Identity

Brand	Corsair
Model Number	SF1000L

Output and rails

+12V Rail Amperage	83.3 A
Single +12V Rail	Yes

Standards and compliance

Hold-Up Time	17 ms

Connector inventory

EPS 8-pin Connectors	2
Molex Connectors	3

Form factor and fit

Length	130 mm
Colour	Black

Build quality

MTBF	100000 hours

Cables

Modularity	Fully Modular

Monitoring, protection and price

Protections	OCP, OVP, OPP, SCP, OTP, UVP
Price	189.99 USD
Warranty	7 years

Wattage	1000 W
80 PLUS Rating	Gold
ATX Standard	ATX 3.1
Form Factor	SFX-L
Cybenetics Efficiency	Platinum
Cybenetics Noise	Standard+
12V-2x6 Connectors	1
Zero-RPM Mode	Yes
Sleeved Cables	No
PCIe 8-pin Connectors	5
Connector Count	1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 5x PCIe 6+2-pin, 3x Molex
Fan Size	120 mm
OEM / Platform	CWT
Japanese Capacitors	Yes
Cable Lengths	24-pin 300mm, EPS 400mm, 12V-2x6 400mm, PCIe 400-500mm, SATA 445mm, Molex 330mm
Source URL	https://www.corsair.com/us/en/p/psu/cp-9020246-na/sf-l-series-sf1000l-fully-modular-low-noise-sfx-power-supply-cp-9020246-na

Expert Review

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

Expert rating8.2 / 10

A rare 1000W SFX-L unit that fits mini-ITX builds pushing an RTX 4080-class card, and the native 12V-2x6 cable means no clunky adapter stuffed into a cramped case.

Best for

High-end single-GPU gaming builds (RTX 4080/4090-class cards)
Builders who want Gold-tier efficiency with future GPU upgrade headroom
Systems that benefit from a native 12V-2x6 cable

Not for

Budget builds where a 550-650W unit would be sufficient
Extreme dual-GPU or workstation rigs needing 1200W+
Buyers who need a full ATX-length unit

FAQs

What are the key specifications of the Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0)?

The Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0) is a power supply from Corsair. Key specs: Wattage 1000 W, 80 PLUS Rating Gold, Cybenetics Efficiency Gold, Cybenetics Noise A, Modularity Fully Modular.

Will the Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0) work with my current setup?

The Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0) lists Wattage is 1000 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 Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0) best suited to?

It suits high-end single-gpu gaming builds (rtx 4080/4090-class cards), builders who want gold-tier efficiency with future gpu upgrade headroom, systems that benefit from a native 12v-2x6 cable.

What are the drawbacks of the Corsair SF1000L (1000W/80+ Gold/SFX-L/Fully Modular/ATX 3.0)?

It is a poor fit for budget builds where a 550-650w unit would be sufficient, extreme dual-gpu or workstation rigs needing 1200w+, buyers who need a full atx-length unit.