LIAN LI Introduces SX Series 80 PLUS Platinum Certified PSUs

Editor’s TLDR: Lian Li has announced a new line of high capacity full-ATX power supplies with high efficiency and a moderate price. Its announcement text follows:

Compact 140 mm ATX power supply with 80 PLUS^® Platinum efficiency
Up to 5 x PCIe cables (1000W/1200W models), including 2 x ATX 3.1 native PCIe Gen 5.1 12V-2×6 to PCIe 6+2pin cables
120mm FDB fan with Zero RPM mode via on/off switch
Premium build with 100% Japanese 105°C capacitors
High-amperage single +12V rail for stable and consistent power
Black or white color options with an embossed mesh design and flexible braided-texture modular cable
Available in 850W, 1000W, and 1200W
Covered by a 10-year warranty

November 13th, 2025, Taipei, Taiwan – LIAN LI, a leading manufacturer of computer chassis and accessories, announces the launch of the SX Series PSU, available in 850W, 1000W, and 1200W with 80 PLUS^® Platinum certification for up to 92% efficiency. Built to deliver stable, future-ready power, the SX Series is fully compliant with Intel’s ATX 3.1 specification and features a native PCIe Gen 5.1 12V-2×6 connector capable of supplying up to 600W directly to next-generation GPUs. Cooling is managed by a 120mm FDB fan with a Zero RPM fanless mode that can be toggled on/off via a rear switch, while premium 100% Japanese 105°C capacitors and a high-amperage single +12V rail ensure long-term stability under demanding loads. With a full suite of industrial-grade protections, flexible braided-texture modular cables, and a choice of black or white models with an embossed mesh design, the SX Series is engineered for both performance and clean cable management. Backed by a 10-year warranty, the SX Series PSU offers enthusiasts reliable power with style and peace of mind.

Platinum Efficiency and ATX 3.1 Readiness
The SX Series PSU features 80 PLUS^® Platinum certification and full compliance with Intel ATX 3.1, ensuring high efficiency and compatibility with current and future systems. It reaches up to 92% efficiency under typical loads, reducing wasted energy and heat, which helps keep the PC cooler and more reliable. Its native PCIe Gen 5.1 12V-2×6 connector provides up to 600W directly to next-generation graphics cards without the need for adapters, while the included 12V-2×6 to dual 6+2 PCIe cable extends support to multiple devices beyond just GPUs on the 1000W and 1200W models.

Cooling and Build Quality
Engineered for quiet yet effective operation, the SX Series features a 120mm fluid dynamic bearing fan with a Zero RPM fanless mode that can be toggled on or off using the switch on the PSU’s rear panel, allowing for always-on mode or activation only when a specific temperature threshold is reached. The PSU is constructed with 100% Japanese 105°C capacitors for long-term reliability and stable voltage regulation, combined with a high-amperage single +12V rail that provides consistent power to demanding components like GPUs and CPUs.

Design, Protection, and Reliability
The SX Series PSU focuses on both aesthetics and safety, featuring flexible braided-texture modular cables for easy routing and a tidy build, along with an embossed mesh housing designed to enhance airflow and visual appeal. To protect the system, the PSU includes a full set of protections, including OPP, OVP, SCP, OCP, OTP, UVP, SIP, and NLP, ensuring reliability in all operating conditions. The SX Series is offered in 850W, 1000W, and 1200W options and comes with a 10-year warranty.

Availability
The LIAN LI SX Series PSUs are available in black only starting November 13th, 2025.

MSRP
SX0850P	$119.99
SX1000P	$149.99
SX1200P	$159.99

For more information on the LIAN LI SX Series PSUs, please visit: https://lian-li.com/product/sx-platinum/

Specifications

Model		SX0850P
ATX12V Version		v3.1
Efficiency Certification		80 PLUS Platinum
DC Output Cables		Fully Modular
Dimensions		(D)140 mm X (W)86 mm X (H)150 mm
Color		Black / White
Material		SECC
PFC		Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz
Input Rating		100-240Vac 6-12A 50-60Hz
Max. DC Output		850W
Combined +12V		849.6W
Combined +3.3 & +5V		100W
Fan Spec		120mm FDB
Fan RPM		2000 RPM
Fanless Mode		Yes
Noise Level		35 dBA
Protection		OPP / NLP / OVP / SCP / OCP / OTP / UVP / SIP
Working Temperature		0~40 Celsius
Warranty		10 Years
Model	SX1000P
ATX12V Version	v3.1
Efficiency Certification	80 PLUS Platinum
DC Output Cables	Fully Modular
Dimensions	(D)140 mm X (W)86 mm X (H)150 mm
Color	Black / White
Material	SECC
PFC	Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz
Input Rating	100-240Vac 6-12A 50-60Hz
Max. DC Output	1000W
Combined +12V	1000W
Combined +3.3 & +5V	100W
Fan Spec	120mm FDB
Fan RPM	2000 RPM
Fanless Mode	Yes
Noise Level	37.6 dBA
Protection	OPP / NLP / OVP / SCP / OCP / OTP / UVP / SIP
Working Temperature	0~40 Celsius
Warranty	10 Years

Model	SX1200P
ATX12V Version	v3.1
Efficiency Certification	80 PLUS Platinum
DC Output Cables	Fully Modular
Dimensions	(D)140 mm X (W)86 mm X (H)150 mm
Color	Black / White
Material	SECC
PFC	Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz
Input Rating	100-240Vac 7.5-14.8A 50-60Hz
Max. DC Output	1200W
Combined +12V	1200W
Combined +3.3 & +5V	100W
Fan Spec	120mm FDB
Fan RPM	2000 RPM
Fanless Mode	Yes
Noise Level	39.9 dBA
Protection	OPP / NLP / OVP / SCP / OCP / OTP / UVP / SIP
Working Temperature	0~40 Celsius
Warranty	10 Years

Included Cables

Cable Type	Total Length (mm)	850W	1000W	1200W
MB 20+4pin	600	1	1	1
CPU 4+4pin	700	2	2	2
GPU 6+2pin	550+150	1	0	0
GPU 6+2pin	550	3	3	3
GPU 12V-2X6	600	1 (600W)	1 (600W)	1 (600W)
GPU 12V-2X6 to 2x8pin	550	0	2	2
SATA	850 (400+150+150+150)	2	2	2
PATA	850 (400+150+150+150)	1	1	1
Total		11	12	12