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Black SFX power supply unit, compact rectangular shape with matte finish and 9.2 mm fan visible

Lian Li

Lian Li SP1000P.B 850W SFX power supply

SKU CH-FCZY-8R8ZN MPN SP1000P.B

An 850W SFX power supply with 80 Plus Platinum efficiency, ATX 3.1 and PCIe 5.1 support, fully modular cables and a 9.2mm FDB fan that stays off below 40% load

  • Max wattage850 W
  • Modular cablingFully Modular
  • Fan configuration9.2 mm FDB Fan
  • Power factor correctionActive PFC, PF > 0.95 under full load @ 115Vac, 60 Hz
  • Efficiency certification80 Plus Platinum
  • Built-in protectionOCP, OVP, OTP, OPP, SCP, UVP, NLP, and SIP

Model SFX 80+ Platinum (1000W) Black

  • Silent operation under 40% load with fanless mode
  • Up to 92% efficiency certified by 80 Plus Platinum
  • Fully modular design simplifies cable routing for better airflow
  • SFX form factor fits compact cases with included ATX bracket
  • Premium 105°C Japanese capacitors ensure long-term reliability

850W SFX Platinum power supply

This 850W SFX power supply targets small-form-factor builders who need high efficiency in a compact footprint. The 125 x 63.5 x 100 mm size fits SFX cases, while the included bracket allows installation in standard ATX chassis as well. Fully modular cabling and 80 Plus Platinum certification suit enthusiasts who value clean cable routing and low energy waste.

Bundled bracket and switch cable

The SFX-to-ATX bracket extends case compatibility beyond compact builds without requiring a separate purchase. A C14-C13 power cable with an integrated on/off switch lets users cut mains power easily when the unit is hidden inside the chassis. Super-flexible DC cables simplify routing for improved airflow and a tidy interior.

105°C capacitors and smart cooling

All capacitors are Japanese 105°C-rated units, supporting long-term reliability under sustained loads. A 9.2 mm FDB fan remains off below 40% load for silent operation, then ramps up only when thermal demand rises. Active PFC with a power factor above 0.95 and a full protection suite including OCP, OVP, OTP, OPP, SCP, UVP, NLP and SIP guard components during sudden power swings.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $152.99
Typical for this category: the median of 10,869 items is $142.99.
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameLIAN LI
Product lineSPP series
Product colorBlack
Product typeATX (ATX 3.1 Compatible)
Power
Max wattage850 W
Modular cablingFully Modular
Power factor correctionActive PFC, PF > 0.95 under full load @ 115Vac, 60 Hz
Efficiency certification80 Plus Platinum
Built-in protectionOCP, OVP, OTP, OPP, SCP, UVP, NLP, and SIP
Supply voltage100-240Vac
AC input frequency6-12A, 50-60 Hz
Size & build
Product dimensions125 mm(W) × 63.5 mm(H) × 100 mm(D)
Product weight3.92 lb (1.78 kg)
Shipping weight2.27 kg
Package size254 × 191 × 114 mm
More details
Fan configuration9.2 mm FDB Fan
Mean time between failures100,000 hrs minimum 25?/75% Load

Other versions of this model

5 more in the same range

Questions about this item

Will the 12V-2x6 connector power a current-generation graphics card?

The unit provides an 850W single rail with 12V-2x6 connectors compliant with ATX 3.1 and PCIe 5.1, supporting modern GPUs within that power budget.

Does the fanless mode stay off during typical desktop use?

Smart Cooling keeps the 9.2 mm FDB fan stopped below 40% load, so light workloads run silently while the fan engages only under heavier demand.

Can this SFX unit fit in a standard ATX case?

An SFX-to-ATX bracket is included, allowing the 125 x 63.5 x 100 mm chassis to mount securely in mid-tower and full-tower builds.

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