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Black SFX power supply with 9.2 mm fan and modular cables

Lian Li

Lian Li SP0850P.B 850W SFX power supply

SKU CH-5MXQ-EKDHZ MPN SP0850P.B

An 850 W SFX power supply with ATX 3.1 and PCIe 5.1 support, 80 Plus Platinum efficiency up to 92 %, fully modular cables and a zero-RPM fan mode below 40 % load

  • Max wattage750 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 (850W) Black

  • Fanless mode below 40 % load for silent operation
  • 80 Plus Platinum delivers up to 92 % efficiency at 50 % load
  • Fully modular braided cables simplify routing in tight SFX builds
  • Included SFX-to-ATX bracket fits 125 × 63.5 × 100 mm unit into standard cases
  • 105 °C Japanese capacitors rated for 100 000 hrs MTBF at 25 °C 75 % load

Platinum SFX Power for Compact Builds

The Lian Li SP0850P.B is an 850W SFX power supply built for small-form-factor systems that need high output. It meets ATX 3.1 and PCIe 5.1 requirements and includes 12V-2x6 connectors for modern graphics cards. The unit suits enthusiasts assembling powerful rigs in limited space.

Smart Cooling and Flexible Install

A 9.2 mm fluid-dynamic-bearing fan stays off until load passes 40 percent, giving silent operation during light work. Fully modular, super-flexible cables ease routing and improve airflow inside tight cases. An included SFX-to-ATX bracket lets the same unit fit mid-tower and full-tower chassis without extra parts.

Platinum Efficiency Upgrade

80 Plus Platinum certification delivers up to 92 percent efficiency at 50 percent load, reducing heat and noise compared with lower-rated units. All capacitors are Japanese 105°C parts rated for 100,000 hours MTBF, and protections include OCP, OVP, OTP, OPP, SCP, UVP, NLP and SIP. The integrated C14-C13 power switch cable adds convenient external power control.

How it compares

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

Price $136.99
Typical for this category: the median of 10,869 items is $142.99.
Max wattage 750 W
Lower than about 60% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameLIAN LI
Product lineSPP series
Product colorBlack
Product typeATX (ATX 3.1 Compatible)
Power
Max wattage750 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 weight2.18 kg
Package size241 × 178 × 102 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 this 850 W SFX unit fit in my mid-tower case?

The included SFX-to-ATX bracket lets you mount the 125 x 63.5 x 100 mm unit in standard ATX bays as well as small-form-factor chassis.

Does it provide the new 12V-2x6 connector for modern graphics cards?

Yes, the supply is ATX 3.1 and PCIe 5.1 compliant and ships with the 12V-2x6 connector required by current GPUs.

How quiet is the fan under typical desktop loads?

The 9.2 mm FDB fan stays off up to 40 % load, so silent operation is maintained during light workloads.

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