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Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply vs Lian Li SP750

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

all judged against power supplies at a similar price

The Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply scores 7.2/10 overall, ahead of the Lian Li SP750 at 5.9/10.

The Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply leads on quality and protections, efficiency, cabling and connectors, noise and warranty.

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

7.2/10verdict: good, not the best

The RM1000e suits builders who want a 1000W ATX 3.1 power supply for a modern high-end graphics card. It fits people who care about low noise at everyday loads and want a native 12V-2x6 cable in the box. It is less suited to buyers who want premium internal components or a generous cable bundle.

Typically about £119.99 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

Lian Li SP750

Lian Li SP750

5.9/10verdict: good, not the best

The Lian Li SP750 is a 750 W SFX power supply for compact builds that need a fully modular unit with an 80 PLUS Gold rating. It suits builders who want quiet running and flexible braided cables in a small case. It is a weaker fit for anyone who needs a native 12V-2x6 cable or many SATA connectors.

Typically about £109.99 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

Scores, criterion by criterion

CriterionWeightCorsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power SupplyLian Li SP750
Quality and protections30%7/106/10
Efficiency20%8/107/10
Cabling and connectors20%7/105/10
Noise15%7/106/10
Warranty15%7/105/10
Overall7.2/105.9/10

Specifications

SpecCorsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power SupplyLian Li SP750
Rated output (W)1000 W rated continuous output; +12V rail 83.3 A; +3.3V and +5V 150 W each; +5VSB 15 W750 W maximum DC output; +12V 744 W; +3.3V/+5V 100 W combined
Efficiency rating (80 Plus or Cybenetics)80 PLUS Gold and Cybenetics Gold per Corsair; Hardware Busters measured Cybenetics Platinum (89.483% at 115 V, 91.576% at 230 V)80 PLUS Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportATX, 140 x 150 x 86 mm; ATX 3.1 certified; PCIe 5.1 compliantSFX, 100 x 63.5 x 125 mm (D x W x H)
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 cable included; 1x 24-pin ATX, 2x EPS 8-pin, 7x SATA, 4x PATA; PCIe 8-pin count disputed across sources (2 to 6)Three PCIe 8-pin (6+2) outputs; one CPU, two SATA and one peripheral connector listed by manufacturer; no 12V-2x6 or 12VHPWR cable listed
Fan size and zero-fan mode120 mm rifle-bearing fan with zero-RPM mode (fan off at low and moderate loads, per Corsair)One 92 mm hydraulic-bearing fan; zero-RPM mode until 40% load
Warranty (years)7 years5 years

Strengths and weaknesses

Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply

  • + Native 12V-2x6 cable and fully modular design
  • + Tight regulation, low ripple and working protections
  • + Quiet at low and moderate loads with zero-RPM mode
  • − Second-tier capacitors and MOSFETs, per Tom's Hardware
  • − Owners describe the cable bundle as minimal
  • − Owners question value against Corsair's own models

Skip it if:

  • Buyers who want premium-brand capacitors and MOSFETs inside the unit
  • Builders needing a large cable bundle for many drives or accessories
  • Anyone who wants ten-year warranty cover
Read the full Corsair RM1000e (2025) RMe Series Fully Modular ATX 3.1 Power Supply review ›

Lian Li SP750

  • + Fully modular with braided cables
  • + 80 PLUS Gold; 90.23% efficiency measured at 808 W
  • + Several owners praise quiet operation
  • − No 12V-2x6 or 12VHPWR cable listed
  • − Some owners report fan spinning up at idle
  • − Only two SATA connectors listed

Skip it if:

  • Buyers with a new NVIDIA card who want a native 12V-2x6 cable
  • Builders with many SATA drives who need more than two connectors
  • Anyone who needs a fan that stays fully silent at idle
Read the full Lian Li SP750 review ›

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