SeaSonic S12II-380 vs CORSAIR RM850x Shift 2025 Power Supply Comparison

The main differences between SeaSonic S12II-380 and CORSAIR RM850x Shift 2025 are in Wattage, Modular, PCI-Express 16 Pin 12VHPWR Connectors and PCI-Express 6+2 Pin Connectors.

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SeaSonic S12II-380	CORSAIR RM850x Shift 2025
Prices (Change region) - Buy now	Prices (Change region) In Stock $149.99 Last updated 12 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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Pangoly Score (How do we rate?) 88	Pangoly Score (How do we rate?) -
Brand SeaSonic	Brand Corsair
Model SS-380GB	Model CP-9020299-NA CP-9020299-EU CP-9020299-UK CP-9020299-AU
Release Date 📅 July 2011	Release Date 📅 November 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (10 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 ►
Pros Excellent build quality 80PLUS Bronze Very quiet Stable voltages	Pros -
Cons Not modular	Cons -
Wattage 380 W	Wattage 850 W
Type ATX	Type ATX
Modular No	Modular Full Shifted
Efficiency 80+ Bronze	Efficiency -
Output +3.3V@20A, +5V@20A, +12V1@17A, +12V2@17A, -12V@0.8A, +5VSB@2.5A	Output -
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 1	PCI-Express 6+2 Pin Connectors 4
PCI-Express 6 Pin Connectors 0	PCI-Express 6 Pin Connectors 0
EPS Connectors 1	EPS Connectors 2
SATA Connectors 4	SATA Connectors 9
Molex Connectors 6	Molex Connectors 4
Length -	Length 160 mm