Corsair TX550M 2021 vs RM850x Shift 2025 Power Supply Comparison

Corsair TX550M 2021 and CORSAIR RM850x Shift 2025 are both power supplies with the same EPS Connectors (2) and Molex Connectors (4). The main differences are in Wattage, Modular, PCI-Express 16 Pin 12VHPWR Connectors and PCI-Express 6+2 Pin Connectors.

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Corsair TX550M 2021	CORSAIR RM850x Shift 2025
Prices (Change region) - Buy now	Prices (Change region) In Stock $149.99 Last updated 54 minutes ago. In Stock Free shipping $149.99 Out of Stock $161.99 In Stock Free shipping $169.99 Show 1 more offers
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Brand Corsair	Brand Corsair
Model CP-9020228-EU CP-9020228-UK	Model CP-9020299-NA CP-9020299-EU CP-9020299-UK CP-9020299-AU
Release Date 📅 August 2021	Release Date 📅 November 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 850 W
Type ATX	Type ATX
Modular Semi	Modular Full Shifted
Efficiency 80+ Gold	Efficiency -
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 4
PCI-Express 6 Pin Connectors 0	PCI-Express 6 Pin Connectors 0
EPS Connectors 2	EPS Connectors 2
SATA Connectors 3	SATA Connectors 9
Molex Connectors 4	Molex Connectors 4
Length 140 mm	Length 160 mm