Lian Li
Lian Li SX1200P Platinum Compact ATX Form Factor 1200W Power Supply | 12V-2x6 Cable | ATX 3.1 PSU & PCIE 5.1 Ready - 140mm Fan - Full Modular - 10 Year Warranty - White (SX1200P.W)
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies Lian Li SX1200P Platinum Compact ATX Form Factor 1200W Power Supply |… as a mid-pack option worth checking against alternatives in the power supplies category, based on 56 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Lian Li's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.0★ customer rating
- ✓ Backed by Lian Li's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Ample PCIe 6+2 Connectors: Easily power multiple accessories, including the LIAN LI Universal USB and fan hub, ensuring a versatile setup without limitations for any build.
- Smart Cooling Technology: Features fanless mode at ≤40% load for silent operation, while maintaining optimal temperatures during high loads for enhanced performance and longevity. Fanless mode off for excellent noise control.
- Flexible Braided Cables: Super flexible DC cables facilitate effortless cable management, reducing clutter and improving airflow in tight or complex builds.
- 80 Plus Platinum Certified : Achieves up to 92% efficiency at 50% load, ensuring cooler, quieter, and more energy-efficient operation with stable voltage regulation.
- 105°C-Rated Capacitors: Built with 100% Japanese 105°C-rated capacitors for exceptional durability and stable performance, even under high thermal stress.
- RMA Support: Missing parts or cable color issues? Reach out to us for quick support or replacement.
Full Specifications
| Brand | Lian Li |
|---|---|
| Wattage | 1200 watts |
| Dimensions | 150 x 86 x 140 mm |
| Model Name | SX1200P.W |
| Form Factor | ATX |
| RMA Support | Missing parts or cable color issues? Reach out to us for quick support or replacement. |
| Connectivity | USB |
| Model Number | SX1200P.W |
| Connector Type | PCI Express |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1200 Watts |
| Item Dimensions | 5.91 x 3.39 x 5.51 inches |
| Mfr Part Number | SX1200P.W |
Ready to buy?
Lian Li SX1200P Platinum Compact ATX Form Factor 1200W Power Supply | 12V-2x6 Cable | ATX 3.1 PSU & PCIE 5.1 Ready - 140mm Fan - Full Modular - 10 Year Warranty - White (SX1200P.W) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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