Corsair RM1000x SHIFT (2025) vs Corsair SF750 SFX Fully Modular 80 PLUS Platinum

Researched, not hands-on tested.How we review ›

all judged against power supplies at a similar price

The Corsair RM1000x SHIFT (2025) scores 7.8/10 overall, ahead of the Corsair SF750 SFX Fully Modular 80 PLUS Platinum at 7.4/10.

The Corsair RM1000x SHIFT (2025) leads on cabling and connectors, noise and warranty.

The Corsair SF750 SFX Fully Modular 80 PLUS Platinum leads on efficiency.

They score the same on quality and protections.

The biggest difference is warranty, where the Corsair RM1000x SHIFT (2025) scores 10/10 to the Corsair SF750 SFX Fully Modular 80 PLUS Platinum's 7/10.

Corsair RM1000x SHIFT (2025)

7.8/10verdict: buy

The RM1000x SHIFT (2025) suits builders putting together a high-end gaming or workstation PC with a current NVIDIA card. It offers 1000W, a native 12V-2x6 cable and a side-mounted modular connector layout. It fits people who want a quiet, long-warranty supply and have case space for the side connectors.

Typically about £129.99 in the UK when we researched itCheck price at Amazon UK

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Corsair SF750 SFX Fully Modular 80 PLUS Platinum

7.4/10verdict: buy

The Corsair SF750 is a 750 W SFX power supply for small-form-factor builds that need a modern GPU cable. It suits buyers who want Platinum efficiency, quiet running and ATX 3.1 support in a compact case. It fits a single-GPU system better than a build that needs many PCIe 8-pin connectors.

Typically about £137.97 in the UK when we researched itCheck price at Amazon UK

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Scores, criterion by criterion

Criterion	Weight	Corsair RM1000x SHIFT (2025)	Corsair SF750 SFX Fully Modular 80 PLUS Platinum
Quality and protections	30%	7/10	7/10
Efficiency	20%	7/10	9/10
Cabling and connectors	20%	8/10	7/10
Noise	15%	8/10	7/10
Warranty	15%	10/10	7/10
Overall		7.8/10	7.4/10

Specifications

Spec	Corsair RM1000x SHIFT (2025)	Corsair SF750 SFX Fully Modular 80 PLUS Platinum
Rated output (W)	1000W combined (+12V 83.3A, 1000W total)	750 W continuous; +12V rated 62.5 A / 750 W
Efficiency	Cybenetics Gold	80 PLUS Platinum; Cybenetics Efficiency Platinum; Cybenetics Noise A-
Form factor	ATX, ATX 3.1 certified, PCIe 5.1 compliant	SFX, 100x125x63.5 mm
Cabling	Fully modular	Fully modular, Type-5 Micro-Fit connectors
GPU power	One native 12V-2x6 cable; PCIe 8-pin counts differ by source; SATA 12 (Tech2Geek) or 16 (Corsair white SKU page)	1x 12VHPWR (12+4-pin) 400 mm; 2x PCIe 8-pin (6+2) 400 mm; 8 SATA, 3 PATA, 2 EPS
Fan size and zero-fan mode	140mm fluid dynamic bearing fan, model NR140HP, with Zero RPM mode	92 mm PWM, fluid dynamic bearing, Zero RPM mode
Warranty (years)	10 years	7 years

Strengths and weaknesses

Corsair RM1000x SHIFT (2025)

+ Quiet running with Zero RPM fan mode
+ Native 12V-2x6 cable and fully modular design
+ 10-year warranty
− LTT Labs lists under-voltage protection as absent
− Side connectors need 30mm clearance to the side panel

Skip it if:

Builders whose case has less than 30mm between the PSU and side panel.
Buyers who want under-voltage protection on the spec sheet.
Anyone with a low-power or always-on system that doesn't need 1000W.

Read the full Corsair RM1000x SHIFT (2025) review ›

Corsair SF750 SFX Fully Modular 80 PLUS Platinum

+ 80 PLUS Platinum with 95% reported at 400 W
+ Native 12VHPWR cable and ATX 3.1 compliance
+ Low ripple and quiet running praised by reviewers
− Fan becomes audible under heavy load, owners say
− Only two PCIe 8-pin cables supplied
− Hold-up time called weak in one review

Skip it if:

Buyers building a multi-GPU or high-draw system needing many PCIe 8-pin connectors.
Anyone who wants silence even when the system runs near full load for long periods.
Buyers who need the strongest hold-up time for unstable mains conditions.

Read the full Corsair SF750 SFX Fully Modular 80 PLUS Platinum review ›

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