Compare Power Supplies

Compare CORSAIR RM850x Shift 2025 vs Antec HCG-400

CORSAIR RM850x Shift 2025 and Antec HCG-400 are both power supplies with the same Molex Connectors (4) and Length (160 mm). 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 RM850x Shift 2025

Antec HCG-400

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Brand

Corsair

Brand

Antec

Model

CP-9020299-NA
CP-9020299-EU
CP-9020299-UK
CP-9020299-AU

Model

HCG-400

Release Date

📅 November 2025

Release Date

-

* First availability for purchase, it may not correspond to the actual market launch date.

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Compatible PC parts

Graphics Cards ► Cases ►

Compatible PC parts

Graphics Cards ► Cases ►

Wattage

850 W

Wattage

400 W

Type

ATX

Type

ATX

Modular

Full Shifted

Modular

Semi

Efficiency

-

Efficiency

80+ Bronze

Output

-

Output

+3.3V@20A, +5V@20A, +12V@30A, -12V@0.8A, +5VSB@2.5A

PCI-Express 16 Pin 12VHPWR Connectors

1

PCI-Express 16 Pin 12VHPWR Connectors

0

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

2

PCI-Express 6 Pin Connectors

0

PCI-Express 6 Pin Connectors

1

EPS Connectors

2

EPS Connectors

1

SATA Connectors

9

SATA Connectors

4

Molex Connectors

4

Molex Connectors

4

Length

160 mm

Length

160 mm

-

Options (4)

	HCG-520
	HCG-520M
	HCG-750 $239.03
	HCG-900

Comparison and key differences summary

Reasons to buy the CORSAIR RM850x Shift 2025:

+450 Watts available
Fully modular power supply
+2 PCI-Express 6+2 Pin connectors available
+1 EPS connectors available
+5 SATA connectors available

Reasons to buy the Antec HCG-400:

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