be quiet! Pure Power 12 750W (BP003EU) 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 RM850e scores 7.0/10 overall, ahead of the be quiet! Pure Power 12 750W (BP003EU) at 6.6/10.

The be quiet! Pure Power 12 750W (BP003EU) leads on efficiency and warranty.

The Corsair RMe Series RM850e leads on quality and protections, cabling and connectors and noise.

The biggest difference is cabling and connectors, where the Corsair RMe Series RM850e scores 7/10 to the be quiet! Pure Power 12 750W (BP003EU)'s 4/10.

be quiet! Pure Power 12 750W (BP003EU)

6.6/10verdict: good, not the best

This is a 750W ATX 3.1 power supply for a single-GPU desktop where low noise and a long warranty matter more than cable tidiness. It suits builders who want a native 12V-2x6 connector and Gold efficiency and are happy with fixed cabling. It is a poor fit for multi-GPU builds or cases that need a minimal cable count.

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	be quiet! Pure Power 12 750W (BP003EU)	Corsair RMe Series RM850e
Quality and protections	30%	6/10	7/10
Efficiency	20%	7/10	6/10
Cabling and connectors	20%	4/10	7/10
Noise	15%	7/10	8/10
Warranty	15%	10/10	7/10
Overall		6.6/10	7.0/10

Specifications

Spec	be quiet! Pure Power 12 750W (BP003EU)	Corsair RMe Series RM850e
Rated output (W)	750W continuous, 820W peak; single 12V rail, 62.5A on +12V1, max combined 12V 750W	850W
Efficiency rating (80 Plus or Cybenetics)	80 PLUS Gold, up to 92.8%	Cybenetics Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x support	ATX, ATX 3.1 compliant, PCIe 5.1 compatible	ATX
Modular cabling (fully, semi or non-modular)	Not modular (fixed cables)	Fully modular
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)	1 x PCIe 5.1 12V-2x6 (600W), 3 x PCIe 6+2-pin, 1 x 20+4-pin motherboard, 1 x P8 (8-pin CPU), 1 x P4+4 CPU, 6 x SATA, 1 x PATA, 8 cables total	2 x PCIe 8-pin (6+2), 1 x 12V-2x6, 2 x EPS
Fan size and zero-fan mode	120mm be quiet! rifle bearing fan, 1800 rpm max, 4-pole motor; 8.7 dB(A) at 10% and 20% load, 8.8 dB(A) at 50%, 22.5 dB(A) at 100%	120mm rifle-bearing fan
Warranty (years)	10 years	7 years

Strengths and weaknesses

be quiet! Pure Power 12 750W (BP003EU)

+ 10-year warranty
+ Native 12V-2x6 cable, ATX 3.1
+ Quiet fan: 8.7 dB(A) up to 20% load
− Non-modular, fixed cables
− Only three PCIe 6+2-pin connectors
− 68.4% efficiency at 2% load

Skip it if:

Builders who want fully modular cabling to keep a small case tidy.
Anyone running several graphics cards that need many 8-pin PCIe connectors.

Read the full be quiet! Pure Power 12 750W (BP003EU) 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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