Lian Li SX Platinum 1000W SXP Compact ATX Form Factor Power Supply w/ 12V-2x6 Cable - ATX 3.1 & PCIE 5.1 Compliant - 140mm Fan - Full Modular - 10 Year Warranty - Black (SX1000P.B)
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AI Verdict
This 1000W ATX 3.1 & PCIe 5.1 compliant power supply with a 140mm fan and 10-year warranty is for compact builds needing high power and future-proofing.
This 1000W ATX 3.1 and PCIe 5.1 compliant power supply is a strong fit for modern, high-performance ATX systems, especially those in compact cases. Its Platinum efficiency and 10-year warranty align with demanding user expectations for stability and longevity. The native 12V-2x6 cable is a key feature for next-gen GPUs.
If you don't need 1000W or the compact 140mm depth, look for a standard ATX PSU with similar ATX 3.1 and PCIe 5.1 compliance for potentially lower cost or different fan configurations.
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Pros
- ATX 3.1 and PCIe 5.1 compliance with a native 12V-2x6 cable ensures compatibility with current and next-gen GPUs.
- Compact 140mm depth allows for easier installation and better cable management in smaller ATX cases.
- 80 PLUS Platinum certification delivers up to 92% efficiency at 50% load, reducing heat and energy consumption.
- Fanless operation up to 40% load provides silent performance during light system use.
- Built with 100% Japanese 105°C-rated capacitors for enhanced durability and stable power delivery.
- Includes flexible braided cables with cable combs for main connections, aiding in a clean build aesthetic.
Cons
- Not all included cables feature braided sleeving; SATA and some 12V-2x6 to dual PCIe cables use flat ribbon.
- While compact, the 140mm depth might still be a tight fit for some extremely small form factor cases designed for SFX PSUs.
- The fan, while having a silent mode, ramps up to 2000 RPM under full load, potentially generating audible noise.
Dimension Scores
Achieves 80 PLUS Platinum certification with up to 92% efficiency at 50% load and supports power excursions up to 200% of rated output.
Features fanless operation at ≤40% load for silent computing during light tasks, though the fan can reach 2000 RPM under full load.
Constructed with 100% Japanese 105°C-rated capacitors and backed by a 10-year warranty, indicating high-quality components and reliability.
Fully modular design with flexible braided main cables and included cable combs simplifies routing, though some peripheral cables are flat ribbon.
Best For
- Compact ATX builds requiring high wattage for powerful GPUs.
- Users upgrading to ATX 3.1 and PCIe 5.1 graphics cards.
- Enthusiasts prioritizing energy efficiency and long-term component stability.
Not Recommended For
- Budget-focused builds where Platinum efficiency is not a priority.
- Users who require all cables to be uniformly braided for aesthetic reasons.
- Extremely noise-sensitive environments under sustained heavy loads.
Watch Out For
- Some users might find the mix of braided and flat ribbon cables for different connections visually inconsistent.
- Despite the 140mm compact size, cable routing in very restrictive cases could still be challenging due to the number of connectors for a 1000W unit.
- The fan operates up to 2000 RPM under full load, which might be noticeable in an otherwise quiet system.
Full Specifications
| ASIN | B0FPCF4H5W |
| Brand | Lian Li |
| Wattage | 1000 watts |
| Fan Count | 1 |
| Model Name | SX1000P.B |
| Form Factor | ATX |
| Item Weight | 6.85 pounds |
| Manufacturer | LIAN LI |
| Connector Type | PCI Express |
| Cooling Method | Air |
| Output Wattage | 1000 Watts |
| Item model number | SX1000P.B |
| Compatible Devices | Computer |
| Product Dimensions | 5.91 x 3.39 x 5.51 inches |
| Item dimensions L x W x H | 5.91 x 3.39 x 5.51 inches |
What Buyers Say
This Lian Li SX Platinum 1000W PSU is positioned as a compact, high-performance option for modern PC builds, particularly those utilizing ATX 3.1 and PCIe 5.1 GPUs. Professional reviews highlight its 140mm compact depth as a significant advantage for case compatibility and cable routing. The 80 PLUS Platinum efficiency and 10-year warranty are consistently mentioned as key benefits, ensuring stable and reliable power delivery over time. The fanless mode for low loads contributes to quiet operation, a feature often sought after by users. The inclusion of a native 12V-2x6 cable is crucial for next-generation graphics cards.
“Look, it's small, it's got the new GPU cable, and it's quiet most of the time. The mixed cable types are a bit of a bummer, but honestly, it just works and fits where other 1000W PSUs won't.”
Common Praise
- Compact 140mm depth fits well in a variety of ATX cases.
- Native 12V-2x6 connector for direct GPU power without adapters.
- Fanless mode up to 40% load keeps the system quiet during everyday use.
- High efficiency with 80 PLUS Platinum rating saves on power consumption.
- Braided main cables with included combs make for a clean build.
- 10-year warranty provides long-term peace of mind.
Common Complaints
- Not all cables are braided; some peripheral and secondary GPU cables are flat ribbon.
- The fan can spin up to 2000 RPM under heavy load, potentially creating audible noise.
- The compact size, while a pro, can still make cable routing challenging in extremely tight spaces.
Ownership Tips
- The compact 140mm length genuinely opens up more case options, especially for ATX PSUs in smaller chassis.
- The fanless mode is noticeable; your PC stays dead silent during web browsing or light gaming.
- Cable management is easier than expected due to the fully modular design and flexible main cables.
- The native 12V-2x6 cable feels more secure than adapter solutions for high-power GPUs.
Frequently Asked Questions
Does this PSU come with a 12V-2x6 cable?
Yes, it includes a native 12V-2x6 cable, making it compliant with ATX 3.1 and PCIe 5.1 standards for modern graphics cards.
Is this power supply fully modular?
Yes, the Lian Li SX Platinum 1000W is a fully modular power supply, allowing you to connect only the cables your system needs, which helps with cable management.
What is the warranty period for this PSU?
It comes with a 10-year warranty, indicating Lian Li's confidence in its durability and performance.
Does this PSU operate silently?
It features a fanless mode for silent operation when the power load is at or below 40%. Above that, the 140mm fan will activate to maintain optimal temperatures.
What kind of capacitors are used in this power supply?
The PSU is built with 100% Japanese 105°C-rated capacitors, which are known for their reliability and stable performance under high thermal stress.
Buying Guide
When you're looking at a power supply, you're essentially buying the heart of your PC. It needs to deliver consistent, clean power to all your components, especially your graphics card and CPU. Wattage is important, but don't just chase the highest number; ensure it's enough for your system with some headroom. Efficiency ratings like 80 PLUS Platinum tell you how much power is wasted as heat, which impacts your electricity bill and your PC's internal temperatures. Finally, consider the physical size and modularity for ease of installation and cable management in your case.
Wattage (1000W)
This is the total power your PSU can deliver. A 1000W unit is suitable for high-end gaming PCs with powerful CPUs and GPUs, providing ample power even during peak loads and for future upgrades.
ATX 3.1 & PCIe 5.1 Compliant
These are the latest power delivery standards, crucial for modern graphics cards (like NVIDIA's RTX 40-series) that use the 12V-2x6 connector. Compliance ensures stable power delivery and prevents issues like power excursions.
80 PLUS Platinum Certified
This certification means the PSU is highly energy-efficient, converting at least 92% of AC power into DC power at 50% load. This reduces wasted energy, lowers your electricity bill, and generates less heat inside your PC.
Compact ATX Form Factor (140mm depth)
A standard ATX PSU is usually 160mm or longer. A 140mm depth means this PSU is shorter, making it easier to fit into smaller PC cases and leaving more room for cable management, especially in cases with tight clearances.
Alternatives
If this PSU doesn't fit your needs, look for units with a higher wattage if you plan for extreme multi-GPU setups, or a lower wattage with similar ATX 3.1 and PCIe 5.1 compliance if your system is less demanding.
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