Lian Li SX850P 850W 80 Plus Platinum ATX 3.1 Full Modular Black Power Supply
- Model: Lian Li SX850P Black (SX0850P BLACK EU)
- Wattage & Efficiency: 850W | 80 PLUS Platinum & PPLP Platinum Certified
- Form Factor: Standard ATX (Compact 140mm depth for wide case compatibility) | Fully Modular
- Standards: ATX 3.1 & PCIe 5.1 Ready | Supports power excursions up to 200% of rated output
- Connectors: Native 12V-2×6 (High-current copper alloy terminals) | Up to 4x PCIe 6+2 pin GPU connectors
- Cooling: 120mm FDB Fan | Smart Stop/Start (Fanless operation up to 40% load) | Vented front mesh panel
- Build Quality: 100% Japanese 105°C Capacitors (Rubycon / Nippon Chemi-Con / Nichicon) | Braided cables with cable combs
- Protection: OCP, OVP, OTP, OPP, SCP, UVP, NLP, SIP
- Dimensions: 150 x 86 x 140 mm (W x H x D)
- Warranty: 10 Years
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Lian Li SX850P 850W 80 PLUS Platinum Black
ATX 3.1 · PCIe 5.1 · Fully Modular · 10-Year Warranty
Why Choose the SX850P?
80 PLUS Platinum
Up to 94% efficiency at 50% load, reducing AC losses and heat for cooler, quieter, more cost-effective operation .
Fanless Up to 40%
Smart stop/start fan control keeps the system silent under low loads. The switch on the rear allows manual enable/disable .
10-Year Warranty
Built with 100% Japanese 105°C capacitors for long-term stability. Backed by Lian Li’s 10-year warranty .
Platinum Performance, Built for Stability
80 PLUS Platinum Certified
The SX Platinum Series delivers up to 94% conversion efficiency at 50% load, achieving 80 PLUS Platinum-level performance and reducing AC losses and heat .
ATX 3.1 & PCIe 5.1 Ready
Supports power excursions up to 200% of rated output. The 12V-2×6 copper-alloy connector with dual-color design ensures safe, stable power delivery for next-gen GPUs .
80 PLUS Platinum Efficiency
The SX Platinum Series delivers up to 94% conversion efficiency at 50% load. This reduces AC losses and heat, allowing your system to run cooler, quieter, and more cost-effective over time. Both 80 PLUS Platinum and PPLP Platinum certifications confirm the efficiency .
80 PLUS Platinum · PPLP Platinum
Smart Stop/Start for Quiet Operation
When the PSU load is at or below 40%, the fan enters its smart stop/start mode to keep the system quiet under low loads. This feature can also be enabled or disabled using the switch on the rear of the unit, giving you control over the acoustic profile of your build .
Fanless Mode · Rear Switch Control
Built to Last, Backed for a Decade
Equipped with 100% Japanese Rubycon / Nippon Chemi-Con / Nichicon 105°C capacitors, the SX Platinum Series ensures stable voltage regulation, lower ripple, and long-term reliability even under high-temperature operation. Lian Li backs this with a 10-year warranty .
Japanese Capacitors · 105°C Rated
Stable Dual-Color PCIe 5.1 Connector
Equipped with a 12V-2×6 copper-alloy terminal for safe and efficient power delivery. The dual-color design helps you verify proper insertion — ensure the blue section is fully inserted when connecting to the graphics card .
12V-2×6 · Copper-Alloy Terminal
Built for Your Build
Standard ATX Compatibility
The 140mm standard ATX length fits a wide range of cases, leaving more interior space for cable routing. Ideal for ATX and mATX builds .
High-End GPU Support
Provides up to four PCIe 6+2 connectors on the 850W model, meeting the power needs of high-end AMD and NVIDIA graphics cards .
Fully Modular Design
Install only the cables your setup requires. Braided cables and cable combs enhance appearance and simplify cable management .
In the Box
Everything you need to get started.
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SX850P PSU 850W ATX 3.1 power supply, black. |
Modular Cables Braided cables with cable combs. |
Power Cord AC power cord. |
Mounting Screws Chassis mounting hardware. |
Technical Specifications
Frequently Asked Questions
Lian Li SX850P Black
850W ATX · 80 PLUS Platinum · ATX 3.1 · PCIe 5.1
10-Year Warranty Included
In Stock · Ships from Alfrensia
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| Fan Size | 120 mm |
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Warranty & Purchase Terms
- Warranty for this product: 10 Years (official agent warranty). Details
- Immediate replacement: if a manufacturing defect appears at any time during the warranty, the product is replaced with a new one, no repair (except products that need software work). If no replacement is available, you get a full refund with no deductions. Details
- Returns: don't need it? Return it within 30 days of purchase, as long as it is sealed, unopened and complete. Details
- Inspecting the shipment: before you accept, look at the outer packaging. If the box is badly damaged (torn, wet, crushed or the tape is open) and shows signs of damage, refuse the shipment with the courier and call us right away on 01021625421. Don't open the product box before accepting. Details
- After delivery: if you open it and find damage or missing parts inside, call us within 48 hours on 01021625421 and keep the box and photos or an unboxing video. Details
- Not covered: misuse (burning, breaking, scratching, removing the warranty sticker), operating systems, software and generic accessories. Details
- Important: keep the Alfrensia warranty sticker on the product and all box contents to benefit from the agent's warranty. Details
- Payment & delivery: cash on delivery. Cairo, Giza & Alexandria within 2–3 business days, other governorates within 3–5 business days after order confirmation. Details
- Refunds: your money is back within 2 business days of receiving the product, by InstaPay, wallet or bank transfer. Details
- Your legal rights: all your rights under Egypt's Consumer Protection Law No. 181 of 2018 stay in full; the benefits above come on top. Details
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