Lian Li SP750 vs Seasonic FOCUS GX-750 ATX 3.1

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

all judged against power supplies at a similar price

The Seasonic FOCUS GX-750 ATX 3.1 scores 7.3/10 overall, ahead of the Lian Li SP750 at 5.9/10.

The Seasonic FOCUS GX-750 ATX 3.1 leads on quality and protections, cabling and connectors and warranty.

They score the same on efficiency and noise.

The biggest difference is warranty, where the Seasonic FOCUS GX-750 ATX 3.1 scores 10/10 to the Lian Li SP750's 5/10.

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

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

Seasonic FOCUS GX-750 ATX 3.1

7.3/10verdict: good, not the best

The Seasonic FOCUS GX-750 ATX 3.1 suits builders who want a fully modular 750 W unit with a modern GPU power connector. It fits compact ATX cases thanks to its 140 mm depth and backs that with a 10-year warranty. It is best for a single-graphics-card desktop or an always-on machine where low standby draw matters.

Typically about £119.99 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	Lian Li SP750	Seasonic FOCUS GX-750 ATX 3.1
Quality and protections	30%	6/10	7/10
Efficiency	20%	7/10	7/10
Cabling and connectors	20%	5/10	7/10
Noise	15%	6/10	6/10
Warranty	15%	5/10	10/10
Overall		5.9/10	7.3/10

Specifications

Spec	Lian Li SP750	Seasonic FOCUS GX-750 ATX 3.1
Rated output (W)	750 W maximum DC output; +12V 744 W; +3.3V/+5V 100 W combined	750 W
Efficiency rating (80 Plus or Cybenetics)	80 PLUS Gold	80 PLUS Gold; Cybenetics Platinum listed on v5 page
Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x support	SFX, 100 x 63.5 x 125 mm (D x W x H)	ATX/EPS, 140 mm depth
Modular cabling (fully, semi or non-modular)	Fully modular	Fully 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 listed	2× EPS, 2× PCIe 6+2-pin, 1× PCIe 12+4-pin (600 W), 8× SATA on 2 cables, 3× Molex on 1 cable (v4 model); native 12V-2×6 cable (v5)
Fan size and zero-fan mode	One 92 mm hydraulic-bearing fan; zero-RPM mode until 40% load	135 mm fluid dynamic bearing, Digital Hybrid Fan Control
Warranty (years)	5 years	10 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-750 ATX 3.1

+ Ten-year warranty
+ Fully modular with 12+4-pin or 12V-2×6 cable
+ Standby draw measured under 0.06 W
− Only two PCIe 6+2-pin connectors
− One owner found it noisy in normal fan mode
− Connector details differ between v4 and v5 revisions

Skip it if:

Builders planning several graphics cards that each need PCIe 8-pin cables
Buyers who want the quietest possible unit in normal fan mode

Read the full Seasonic FOCUS GX-750 ATX 3.1 review ›

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