Corsair RMe Series RM750e vs Corsair RMe Series RM850e

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 Corsair RMe Series RM850e at 7.0/10.

The Corsair RMe Series RM750e leads on cabling and connectors.

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

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

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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

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

Scores, criterion by criterion

Criterion	Weight	Corsair RMe Series RM750e	Corsair RMe Series RM850e
Quality and protections	30%	7/10	7/10
Efficiency	20%	6/10	6/10
Cabling and connectors	20%	8/10	7/10
Noise	15%	8/10	8/10
Warranty	15%	7/10	7/10
Overall		7.2/10	7.0/10

Specifications

Spec	Corsair RMe Series RM750e	Corsair RMe Series RM850e
Rated output (W)	750 W continuous; +12V rail rated 62.5 A	850W
Efficiency rating (80 Plus or Cybenetics)	Cybenetics Gold; up to 89% overall efficiency (manufacturer claim)	Cybenetics Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x support	ATX; ATX 3.1 certified; PCIe 5.1 compatible	ATX
Modular cabling (fully, semi or non-modular)	Fully modular	Fully 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 SATA	2 x PCIe 8-pin (6+2), 1 x 12V-2x6, 2 x EPS
Fan size and zero-fan mode	120 mm rifle-bearing fan; Zero RPM mode	120mm rifle-bearing fan
Warranty (years)	7 years	7 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 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 ›

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