Lian Li RB550 vs RB750 Power Supply Comparison

Lian Li RB550 and Lian Li RB750 are both power supplies with the same Modular (No), Efficiency (80+ Bronze) and EPS Connectors (2). The main differences are in Wattage, PCI-Express 16 Pin 12VHPWR Connectors, PCI-Express 6+2 Pin Connectors and SATA Connectors.

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Lian Li RB550	Lian Li RB750
Prices (Change region) In Stock $49.99 Last updated 4 minutes ago. Out of Stock $55.68 In Stock Free shipping $62.81	Prices (Change region) In Stock $69.90 Last updated 4 minutes ago. In Stock Free shipping $69.99 In Stock $69.99
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Brand Lian Li	Brand Lian Li
Model RB0550B G9P.RB0550B.B000.EU G9P.RB0550B.B000	Model RB0750B G9P.RB0750B.B000 G9P.RB0750B.B000.EU
Release Date 📅 October 2025	Release Date 📅 October 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Compatible PC parts Graphics Cards ► Cases ►	Compatible PC parts Graphics Cards ► Cases ►
Wattage 550 W	Wattage 750 W
Type ATX	Type ATX
Modular No	Modular No
Efficiency 80+ Bronze	Efficiency 80+ Bronze
PCI-Express 16 Pin 12VHPWR Connectors 0	PCI-Express 16 Pin 12VHPWR Connectors 1
PCI-Express 12 Pin Connectors 0	PCI-Express 12 Pin Connectors 0
PCI-Express 6+2 Pin Connectors 2	PCI-Express 6+2 Pin Connectors 3
PCI-Express 6 Pin Connectors 0	PCI-Express 6 Pin Connectors 0
EPS Connectors 2	EPS Connectors 2
SATA Connectors 3	SATA Connectors 5
Molex Connectors 1	Molex Connectors 2
Length 150 mm	Length 150 mm