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Corsair RMe Series RM750e vs Corsair RMx Series RM1000x Fully Modular Power Supply

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

all judged against power supplies at a similar price

The Corsair RMx Series RM1000x Fully Modular Power Supply scores 7.7/10 overall, ahead of the Corsair RMe Series RM750e at 7.2/10.

The Corsair RMe Series RM750e leads on noise.

The Corsair RMx Series RM1000x Fully Modular Power Supply leads on efficiency and warranty.

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

The biggest difference is warranty, where the Corsair RMx Series RM1000x Fully Modular Power Supply scores 10/10 to the Corsair RMe Series RM750e's 7/10.

Corsair RMe Series RM750e

Corsair RMe Series RM750e

7.2/10verdict: good, not the best

The RM750e is for people building a single-GPU desktop who want a fully modular ATX 3.1 power supply with a native 12V-2x6 cable. It suits builders who value a quiet fan that stays off at idle and a 7-year warranty. It is a weaker fit for machines that idle around the clock, where owners report poor low-load efficiency.

Typically about £89.99 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 RMx Series RM1000x Fully Modular Power Supply

Corsair RMx Series RM1000x Fully Modular Power Supply

7.7/10verdict: buy

The Corsair RM1000x suits builders putting a high-power graphics card into a new ATX system. It also fits drive-heavy workstations and homelab machines that need many SATA connectors. It is a fully modular 1000W unit with a 10-year warranty and a native 12V-2x6 connector.

Typically about £130 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 RM750eCorsair RMx Series RM1000x Fully Modular Power Supply
Quality and protections30%7/107/10
Efficiency20%6/108/10
Cabling and connectors20%8/108/10
Noise15%8/106/10
Warranty15%7/1010/10
Overall7.2/107.7/10

Specifications

SpecCorsair RMe Series RM750eCorsair RMx Series RM1000x Fully Modular Power Supply
Rated output (W)750 W continuous; +12V rail rated 62.5 A1000W continuous
Efficiency rating (80 Plus or Cybenetics)Cybenetics Gold; up to 89% overall efficiency (manufacturer claim)Measured Cybenetics Platinum: 89-91% at 115V, 91-93% at 230V (Hardware Busters)
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX; ATX 3.1 certified; PCIe 5.1 compatibleATX, 160x150x86 mm (Corsair); 150x85x160 mm (Hardware Busters)
Modular cabling (fully, semi or non-modular)Fully modularFully modular, Type-4 cables
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)One native 12V-2x6 (12+4) cable, 650 mm; one 12V-2x6 to dual PCIe 8-pin adapter-style cable; one PCIe 8-pin (6+2) cable (three PCIe 8-pin outputs in total); two EPS 8-pin; six SATA1x PCIe 12V-2x6 (12+4), 4x PCIe 8-pin (6+2), 2x EPS 8-pin, 12x SATA, 6x PATA
Fan size and zero-fan mode120 mm rifle-bearing fan; Zero RPM mode1x 140mm fluid dynamic bearing fan with Zero RPM mode and manual override knob
Warranty (years)7 years10 years

Strengths and weaknesses

Corsair RMe Series RM750e

  • + Native 12V-2x6 cable on a fully modular unit
  • + Fan stays off at idle; Cybenetics noise rating A
  • + Seven-year warranty with all main protections listed
  • − Owners report weak low-load efficiency
  • − Some reviewers raise ripple and transient response concerns
  • − Owners call the MSRP uncompetitive

Skip it if:

  • Anyone building an always-on server or low-power PC that idles most of the time.
  • Buyers who need many SATA connectors for a large drive array.
  • Buyers who want the lowest ripple and the strongest transient response.
Read the full Corsair RMe Series RM750e review ›

Corsair RMx Series RM1000x Fully Modular Power Supply

  • + 10-year warranty
  • + Native 12V-2x6 plus four PCIe 8-pin and 12 SATA
  • + Platinum-level efficiency measured on 230V
  • − Light-load efficiency is modest, about 74% at 20W
  • − Some owners report scratchy fan noise near full speed
  • − Some owners say the fan runs at full speed at desktop

Skip it if:

  • Buyers building a low-power always-on box who want high efficiency at very light loads
  • Buyers who need an utterly silent system and are bothered by reports of fan noise
  • Buyers with a small chassis that cannot take a roughly 160 mm deep ATX unit
Read the full Corsair RMx Series RM1000x Fully Modular Power Supply review ›

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