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Corsair RMe Series RM750e vs Seasonic FOCUS GX-850 ATX 3 (2024)

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

all judged against power supplies at a similar price

The Corsair RMe Series RM750e scores 7.2/10 overall, ahead of the Seasonic FOCUS GX-850 ATX 3 (2024) at 6.8/10.

The Corsair RMe Series RM750e leads on quality and protections, cabling and connectors and noise.

The Seasonic FOCUS GX-850 ATX 3 (2024) leads on efficiency and warranty.

The biggest difference is noise, where the Corsair RMe Series RM750e scores 8/10 to the Seasonic FOCUS GX-850 ATX 3 (2024)'s 5/10.

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

Seasonic FOCUS GX-850 ATX 3 (2024)

6.8/10verdict: good, not the best

The Seasonic FOCUS GX-850 ATX 3 (2024) is for builders who want a fully modular 850 W unit with a native 12V-2x6 cable for a current graphics card. It suits buyers who value a 10-year warranty and strong efficiency figures on 230V mains. It is a weaker fit for anyone who puts tight voltage regulation or a consistently quiet fan first.

Typically about £144.95 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 RM750eSeasonic FOCUS GX-850 ATX 3 (2024)
Quality and protections30%7/105/10
Efficiency20%6/108/10
Cabling and connectors20%8/107/10
Noise15%8/105/10
Warranty15%7/1010/10
Overall7.2/106.8/10

Specifications

SpecCorsair RMe Series RM750eSeasonic FOCUS GX-850 ATX 3 (2024)
Rated output (W)750 W continuous; +12V rail rated 62.5 A850 W
Efficiency rating (80 Plus or Cybenetics)Cybenetics Gold; up to 89% overall efficiency (manufacturer claim)80 PLUS Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX; ATX 3.1 certified; PCIe 5.1 compatibleATX
Modular cabling (fully, semi or non-modular)Fully modularFully modular
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 12V-2x6 (native); 1x PCIe 12+4 pin (600W) per Hardware Busters; 3x PCIe 6+2 pin; 8x SATA; 3x Molex
Fan size and zero-fan mode120 mm rifle-bearing fan; Zero RPM mode135 mm fluid dynamic bearing fan; semi-passive mode (selectable)
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 ›

Seasonic FOCUS GX-850 ATX 3 (2024)

  • + 10-year warranty, praised by owners
  • + Cybenetics Platinum efficiency despite the Gold label
  • + Fully modular with native 12V-2x6 cable
  • − Loose 12V load regulation per Hardware Busters
  • − Fan curve complaints; spins up early for some owners
  • − Cables reported as bulky or short

Skip it if:

  • Buyers who put tight 12 V voltage regulation first
  • Builders who need a consistently silent fan at low load
  • Anyone with a compact case who needs long, flexible cables
Read the full Seasonic FOCUS GX-850 ATX 3 (2024) review ›

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