Chieftec ATMOS 850W vs CORSAIR RM850x Shift 2025 Power Supply Comparison

Chieftec ATMOS 850W and CORSAIR RM850x Shift 2025 are both power supplies with the same Wattage (850 W), PCI-Express 16 Pin 12VHPWR Connectors (1) and PCI-Express 6+2 Pin Connectors (4). The main differences are in Modular and Length.

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Chieftec ATMOS 850W	CORSAIR RM850x Shift 2025
Prices (Change region) - Buy now	Prices (Change region) In Stock $149.99 Last updated 38 minutes ago. In Stock Free shipping $149.99 In Stock Free shipping $169.99 In Stock $204.99 Show 1 more offers
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Brand Chieftec	Brand Corsair
Model CPX-850FC	Model CP-9020299-NA CP-9020299-EU CP-9020299-UK CP-9020299-AU
Release Date -	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 850 W	Wattage 850 W
Type ATX	Type ATX
Modular Full	Modular Full Shifted
Efficiency 80+ Gold	Efficiency -
PCI-Express 16 Pin 12VHPWR Connectors 1	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 4	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 9	SATA Connectors 9
Molex Connectors 4	Molex Connectors 4
Length 140 mm	Length 160 mm