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Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply 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 SF750 SFX Fully Modular 80 PLUS Platinum scores 7.4/10 overall, ahead of the Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply at 7.2/10.

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

They score the same on quality and protections, cabling and connectors, noise and warranty.

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

7.2/10verdict: good, not the best

The RM1000e suits builders who want a 1000W ATX 3.1 power supply for a modern high-end graphics card. It fits people who care about low noise at everyday loads and want a native 12V-2x6 cable in the box. It is less suited to buyers who want premium internal components or a generous cable bundle.

Typically about £119.99 in the UK when we researched itSearch Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Corsair SF750 SFX Fully Modular 80 PLUS Platinum

Corsair SF750 SFX Fully Modular 80 PLUS Platinum

7.4/10verdict: good, not the best

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 itSearch Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightCorsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power SupplyCorsair SF750 SFX Fully Modular 80 PLUS Platinum
Quality and protections30%7/107/10
Efficiency20%8/109/10
Cabling and connectors20%7/107/10
Noise15%7/107/10
Warranty15%7/107/10
Overall7.2/107.4/10

Specifications

SpecCorsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power SupplyCorsair SF750 SFX Fully Modular 80 PLUS Platinum
Rated output (W)1000 W rated continuous output; +12V rail 83.3 A; +3.3V and +5V 150 W each; +5VSB 15 W750 W continuous; +12V rated 62.5 A / 750 W
Efficiency rating (80 Plus or Cybenetics)80 PLUS Gold and Cybenetics Gold per Corsair; Hardware Busters measured Cybenetics Platinum (89.483% at 115 V, 91.576% at 230 V)80 PLUS Platinum; Cybenetics Efficiency Platinum; Cybenetics Noise A-
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX, 140 x 150 x 86 mm; ATX 3.1 certified; PCIe 5.1 compliantSFX, 100x125x63.5 mm
Modular cabling (fully, semi or non-modular)Fully modularFully modular, Type-5 Micro-Fit connectors
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)One native 12V-2x6 cable included; 1x 24-pin ATX, 2x EPS 8-pin, 7x SATA, 4x PATA; PCIe 8-pin count disputed across sources (2 to 6)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 mode120 mm rifle-bearing fan with zero-RPM mode (fan off at low and moderate loads, per Corsair)92 mm PWM, fluid dynamic bearing, Zero RPM mode
Warranty (years)7 years7 years

Strengths and weaknesses

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

  • + Native 12V-2x6 cable and fully modular design
  • + Tight regulation, low ripple and working protections
  • + Quiet at low and moderate loads with zero-RPM mode
  • − Second-tier capacitors and MOSFETs, per Tom's Hardware
  • − Owners describe the cable bundle as minimal
  • − Owners question value against Corsair's own models

Skip it if:

  • Buyers who want premium-brand capacitors and MOSFETs inside the unit
  • Builders needing a large cable bundle for many drives or accessories
  • Anyone who wants ten-year warranty cover
Read the full Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply 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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