Deliver next-level stability and efficiency to your high-performance build with the Lian Li SX1200P Platinum 1200W power supply. This PSU achieves elite 80 PLUS Platinum and PPLP Platinum certification by delivering up to 94% conversion efficiency, reducing heat and energy waste. It is fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, featuring a reinforced native 12V-2x6 connector with high-current copper alloy terminals to safely power next-generation graphics cards and handle power excursions up to 200% of its rated output. Built exclusively with 100% premium Japanese 105degC capacitors, this unit guarantees exceptional durability and stable voltage regulation. Experience whisper-quiet operation thanks to a smart stop/start 120mm FDB fan that remains completely fanless up to a 40% load. The fully modular, compact 140mm ATX chassis ensures wide case compatibility and easy installation, while the included premium braided-texture cables with cable combs provide a clean, professional finish right out of the box, the SX Platinum is the definitive choice for a reliable and future-proof system.
Deliver next-level stability and efficiency to your high-performance build with the Lian Li SX1200P Platinum 1200W power supply. This PSU achieves elite 80 PLUS Platinum and PPLP Platinum certification by delivering up to 94% conversion efficiency, reducing heat and energy waste. It is fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, featuring a reinforced native 12V-2x6 connector with high-current copper alloy terminals to safely power next-generation graphics cards and handle power excursions up to 200% of its rated output. Built exclusively with 100% premium Japanese 105degC capacitors, this unit guarantees exceptional durability and stable voltage regulation. Experience whisper-quiet operation thanks to a smart stop/start 120mm FDB fan that remains completely fanless up to a 40% load. The fully modular, compact 140mm ATX chassis ensures wide case compatibility and easy installation, while the included premium braided-texture cables with cable combs provide a clean, professional finish right out of the box, the SX Platinum is the definitive choice for a reliable and future-proof system.
Lian Li Platinum ATX3.1 ATX Power Supply Black 1200 W
Deliver next-level stability and efficiency to your high-performance build with the Lian Li SX1200P Platinum 1200W power supply. This PSU achieves elite 80 PLUS Platinum and PPLP Platinum certification by delivering up to 94% conversion efficiency, reducing heat and energy waste. It is fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, featuring a reinforced native 12V-2x6 connector with high-current copper alloy terminals to safely power next-generation graphics cards and handle power excursions up to 200% of its rated output. Built exclusively with 100% premium Japanese 105degC capacitors, this unit guarantees exceptional durability and stable voltage regulation. Experience whisper-quiet operation thanks to a smart stop/start 120mm FDB fan that remains completely fanless up to a 40% load. The fully modular, compact 140mm ATX chassis ensures wide case compatibility and easy installation, while the included premium braided-texture cables with cable combs provide a clean, professional finish right out of the box, the SX Platinum is the definitive choice for a reliable and future-proof system.
Deliver next-level stability and efficiency to your high-performance build with the Lian Li SX1200P Platinum 1200W power supply. This PSU achieves elite 80 PLUS Platinum and PPLP Platinum certification by delivering up to 94% conversion efficiency, reducing heat and energy waste. It is fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, featuring a reinforced native 12V-2x6 connector with high-current copper alloy terminals to safely power next-generation graphics cards and handle power excursions up to 200% of its rated output. Built exclusively with 100% premium Japanese 105degC capacitors, this unit guarantees exceptional durability and stable voltage regulation. Experience whisper-quiet operation thanks to a smart stop/start 120mm FDB fan that remains completely fanless up to a 40% load. The fully modular, compact 140mm ATX chassis ensures wide case compatibility and easy installation, while the included premium braided-texture cables with cable combs provide a clean, professional finish right out of the box, the SX Platinum is the definitive choice for a reliable and future-proof system.
in 5 offers
The lowest price for Lian Li Platinum ATX3.1 ATX Power Supply Black 1200 W right now is $275.00 at Scorptec, compared across 5 retailers.
The all-time low was $205.00 on 20 June 2026 — today's price is 34% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 13 Nov 2026.
Last updated at 13/11/2026 20:09:17
Lian Li SX PLATINUM 1200W Power Supply
Delivery $19
Lian Li SX Platinum 1200W 80 PLUS Platinum PCIe 5.1 ATX 3.1 Fully Modular Power Supply - Black
Free delivery between 17–24 Nov
Lian Li SX 1200W Platinum PCIe 5.1 ATX 3.1 SFX Modular PSU
Delivery between 17–26 Nov $24.10
Lian Li SX1200P Platinum ATX3.1 1200W ATX Power Supply Black (SX1200P-B)
Delivery between Tue – Wed $19
Lian Li SX1200P Platinum ATX3.1 1200W ATX Power Supply Black
Free delivery between Tue – Wed
| Brand | LIAN LI |
| Form Factor | SFX |
| Modular | Yes |
| 80 PLUS Rating | 80 PLUS Platinum |
| Power Output | 1,200 watts |
Lian Li SX PLATINUM 1200W Power Supply
Delivery $19
Lian Li SX Platinum 1200W 80 PLUS Platinum PCIe 5.1 ATX 3.1 Fully Modular Power Supply - Black
Free delivery between 17–24 Nov
Lian Li SX 1200W Platinum PCIe 5.1 ATX 3.1 SFX Modular PSU
Delivery between 17–26 Nov $24.10
Lian Li SX1200P Platinum ATX3.1 1200W ATX Power Supply Black (SX1200P-B)
Delivery between Tue – Wed $19
Lian Li SX1200P Platinum ATX3.1 1200W ATX Power Supply Black
Free delivery between Tue – Wed
| Brand | LIAN LI |
| Form Factor | SFX |
| Modular | Yes |
| 80 PLUS Rating | 80 PLUS Platinum |
| Power Output | 1,200 watts |
