SeaSonic S12II-380 vs SS-660XP2 Power Supply Comparison

The main differences between SeaSonic S12II-380 and SeaSonic SS-660XP2 are in Wattage, Modular, Efficiency and Output.

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SeaSonic S12II-380	SeaSonic SS-660XP2
Prices (Change region) - Buy now	Prices (Change region) - Buy now
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Pangoly Score (How do we rate?) 88	Pangoly Score (How do we rate?) 96
Brand SeaSonic	Brand SeaSonic
Model SS-380GB	Model SS-660XP2
Release Date 📅 July 2011	Release Date 📅 August 2014
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (10 reviews) Add a product review	User reviews ★★★★★ (39 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 80PLUS Platinum Excellent voltage stability Excellent ripple suppression Fully modular Quiet
Cons Not modular	Cons None
Wattage 380 W	Wattage 660 W
Type ATX	Type ATX
Modular No	Modular Full
Efficiency 80+ Bronze	Efficiency 80+ Platinum
Output +3.3V@20A, +5V@20A, +12V1@17A, +12V2@17A, -12V@0.8A, +5VSB@2.5A	Output +3.3V@25A, +5@25A, +12V@55A, -12V@0.5A, +5Vsb@3A
PCI-Express 16 Pin 12VHPWR Connectors 0	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 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 10
Molex Connectors 6	Molex Connectors 5
Length -	Length 160 mm