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Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B
Lian Li

Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B

Bottom line: The Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B is a specs-and-price decision rather than a crowd-consensus one in the power supplies category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Backed by Lian Li's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Lian Li's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

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

BrandLian Li
Wattage850 watts
Fan Count1
Dimensions150 x 86 x 140 mm
Model NameSX0850P.B
Form FactorATX
RMA SupportMissing parts or cable color issues? Reach out to us for quick support or replacement.
ConnectivityUSB
Connector TypePCI Express
Cooling MethodAir
Output Wattage850 watts
Compatible DevicesComputer System, Graphics Card, Processor, Motherboard, Hard Drive, Optical Drive, RAM, Case, etc.
Product Dimensions5.9"W x 3.4"H x 5.5"D (150 x 86 x 140 mm); equipped with a 120 mm FDB fan with maximum fan speed of 2,000 RPM.
105°C-Rated CapacitorsBuilt with 100% Japanese 105°C-rated capacitors for exceptional durability and stable performance, even under high thermal stress.
Flexible Braided CablesSuper flexible DC cables facilitate effortless cable management, reducing clutter and improving airflow in tight or complex builds.
Ample PCIe 6+2 ConnectorsEasily power multiple accessories, including the LIAN LI Universal USB and fan hub, ensuring a versatile setup without limitations for any build.
Item dimensions L x W x H5.91 x 3.39 x 5.51 inches
80 Plus Platinum CertifiedAchieves up to 92% efficiency at 50% load, ensuring cooler, quieter, and more energy-efficient operation with stable voltage regulation.

Ready to buy?

Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Lian Li SX0850P Platinum Compact ATX PSU 850W-ATX 3.1-Black-SX0850P.B
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