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Lian Li SP750 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 Seasonic FOCUS GX-850 ATX 3 (2024) scores 6.8/10 overall, ahead of the Lian Li SP750 at 5.9/10.

The Lian Li SP750 leads on quality and protections and noise.

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

The biggest difference is warranty, where the Seasonic FOCUS GX-850 ATX 3 (2024) scores 10/10 to the Lian Li SP750's 5/10.

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

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

CriterionWeightLian Li SP750Seasonic FOCUS GX-850 ATX 3 (2024)
Quality and protections30%6/105/10
Efficiency20%7/108/10
Cabling and connectors20%5/107/10
Noise15%6/105/10
Warranty15%5/1010/10
Overall5.9/106.8/10

Specifications

SpecLian Li SP750Seasonic FOCUS GX-850 ATX 3 (2024)
Rated output (W)750 W maximum DC output; +12V 744 W; +3.3V/+5V 100 W combined850 W
Efficiency rating (80 Plus or Cybenetics)80 PLUS Gold80 PLUS Gold
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x supportSFX, 100 x 63.5 x 125 mm (D x W x H)ATX
Modular cabling (fully, semi or non-modular)Fully modularFully modular
Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count)Three PCIe 8-pin (6+2) outputs; one CPU, two SATA and one peripheral connector listed by manufacturer; no 12V-2x6 or 12VHPWR cable listed1x 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 modeOne 92 mm hydraulic-bearing fan; zero-RPM mode until 40% load135 mm fluid dynamic bearing fan; semi-passive mode (selectable)
Warranty (years)5 years10 years

Strengths and weaknesses

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 ›

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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