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Black rectangular ATX power supply with built-in cable routing channels and a 135mm fan

Lian Li

Lian Li RB 650W power supply

SKU CH-V27Y-RGAGY

An ATX 3.1 power supply delivering 650 W with 80 Plus Bronze efficiency, a 135 mm hydraulic-bearing fan, integrated cable-routing channels and a native 12+4 pin PCIe connector for modern graphics

  • Max wattage650 W
  • Modular cablingNon Modular
  • Fan configuration1 × 135 mm HYB Fan
  • Power factor correctionActive PFC, PF > 0.95 under full load @ 115Vac, 60 Hz
  • Main power connector20+4Pin
  • Efficiency certification80 PLUS BRONZE Certified

Size 650W

  • 80 PLUS Bronze certified for up to 85% efficiency
  • ATX 3.1 platform with native PCIe 5.1 12+4pin connector
  • Built-in cable channels and Velcro straps for cleaner routing
  • 135mm hydraulic-bearing fan tuned for low-noise cooling
  • Five-year warranty backed by 100,000-hour MTBF

Power for mainstream builds

The Lian Li RB 650W unit delivers 650 W of continuous output at 40°C, making it suitable for everyday gaming and creator PCs. Its 80 PLUS Bronze rating confirms up to 85% efficiency at typical loads. Active PFC maintains a power factor above .95 at 115Vac, 60Hz, helping keep power delivery consistent. The non-modular design means all cables are fixed to the housing.

Sustained-load behaviour

A single high-amperage +12V rail and DC-to-DC topology provide stable voltage regulation during extended sessions. The 135mm hydraulic-bearing fan is optimised for low noise while moving enough air for continuous operation. Protection circuits cover OPP, OVP, SCP, OCP, UVP and OTP, so the supply shuts down safely if limits are exceeded. MTBF exceeds 100,000 hours under rated conditions.

Cable layout and mounting

Integrated routing channels and Velcro straps on the PSU housing let you tuck excess cable length for a cleaner back-side layout and improved airflow. Fixed cables include a 20+4Pin main connector, two EPS 4+4Pin leads, one PCIe 6+2Pin, one PCIe 12+4Pin rated for 450W, and SATA plus peripheral strings. The 150mm depth fits standard ATX 3.1 bays.

How it compares

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

Price $49.99
Cheaper than about 91% of the 10,869 comparable items (median $142.99).
Max wattage 650 W
Lower than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameLIAN LI
Product lineRB series
Product colorBlack
Product typeATX (ATX 3.1 Compatible)
Power
Max wattage650 W
Modular cablingNon Modular
Power factor correctionActive PFC, PF > 0.95 under full load @ 115Vac, 60 Hz
Main power connector20+4Pin
Efficiency certification80 PLUS BRONZE Certified
Built-in protectionOPP/OVP/SCP/OCP/UVP/OTP
Supply voltage100–240 V
AC input frequency10A, 50-60 Hz
Size & build
Product dimensions150 mm(W)x86 mm(H)x150 mm(D)
Product weight5 lb (2.27 kg)
Environment & compliance
Regulatory approvalsCE/CB/cTUVus/TÜV/FCC/BSMI/CCC/KCC/SAA+RCM
More details
Fan configuration1 × 135 mm HYB Fan
Mean time between failures>100,000 h

Other versions of this model

2 more in the same range

Questions about this item

How loud and hot does the 135 mm hydraulic-bearing fan get during all-day use?

The 135 mm hydraulic-bearing fan is optimised for low noise and efficient cooling under typical loads, while the unit maintains continuous output at up to 40 °C ambient temperature.

What cables are permanently attached so I know what I do not need to buy separately?

Fixed cables include a 20+4 pin ATX connector, two 4+4 pin EPS connectors, one 6+2 pin PCIe, one 12+4 pin PCIe 5.1 connector rated for 450 W, plus SATA and peripheral leads.

Will the ATX 3.1 design and native 12+4 pin connector work with my older motherboard and graphics card?

Yes, the 20+4 pin main connector and 6+2 pin PCIe lead support legacy boards and GPUs, while the 12+4 pin cable is ready for newer PCIe 5.1 graphics cards.

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