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Corsair RMe Series RM850e 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 RMe Series RM850e at 7.0/10.

The Corsair RMe Series RM850e leads on noise.

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

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

The biggest difference is efficiency, where the Corsair SF750 SFX Fully Modular 80 PLUS Platinum scores 9/10 to the Corsair RMe Series RM850e's 6/10.

Corsair RMe Series RM850e

Corsair RMe Series RM850e

7.0/10verdict: good, not the best

The Corsair RM850e is an 850W ATX power supply for people building or upgrading a quiet desktop or workstation. It suits buyers who want a fully modular unit with a native 12V-2x6 cable and a seven-year warranty. It is less suited to builds that need many PCIe 8-pin cables or a low-load, always-on setup.

Typically about £94.99 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 RMe Series RM850eCorsair SF750 SFX Fully Modular 80 PLUS Platinum
Quality and protections30%7/107/10
Efficiency20%6/109/10
Cabling and connectors20%7/107/10
Noise15%8/107/10
Warranty15%7/107/10
Overall7.0/107.4/10

Specifications

SpecCorsair RMe Series RM850eCorsair SF750 SFX Fully Modular 80 PLUS Platinum
Rated output (W)850W750 W continuous; +12V rated 62.5 A / 750 W
Efficiency rating (80 Plus or Cybenetics)Cybenetics Gold80 PLUS Platinum; Cybenetics Efficiency Platinum; Cybenetics Noise A-
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATXSFX, 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)2 x PCIe 8-pin (6+2), 1 x 12V-2x6, 2 x EPS1x 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 mode120mm rifle-bearing fan92 mm PWM, fluid dynamic bearing, Zero RPM mode
Warranty (years)7 years7 years

Strengths and weaknesses

Corsair RMe Series RM850e

  • + Quiet: 22.81 dBA average and consistent owner praise
  • + Fully modular with a native 12V-2x6 cable
  • + Ripple and regulation measured well by independent reviewers
  • − Only two PCIe 8-pin connectors
  • − Efficiency drops below 70% at 2% load, owners report
  • − Standard cable has no OTP; owners report 3.3V droop

Skip it if:

  • Builders who need more than two PCIe 8-pin connectors for multiple GPUs.
  • Buyers running a near-idle, always-on machine where efficiency at 2% load matters.
  • Anyone who wants over-temperature protection on the standard cable.
Read the full Corsair RMe Series RM850e 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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