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Power Supply Comparison

SeaSonic - 520 W 80+ Bronze Certified Fully Modular ATX Power Supply SeaSonic - FOCUS Plus Gold 550 W 80+ Gold Certified Fully Modular ATX Power Supply SeaSonic - PRIME Ultra Gold 550 W 80+ Gold Certified Fully Modular ATX Power Supply SeaSonic - FOCUS Gold 550 W 80+ Gold Certified Semi-modular ATX Power Supply
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Lowest Price

$49.99
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Lowest Price

$76.98
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Lowest Price

$104.99
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Lowest Price

$77.88

Rating

(83 Ratings, 4.8 Average)

Rating

(19 Ratings, 4.8 Average)

Rating

(1 Rating, 5.0 Average)

Rating

(3 Ratings, 5.0 Average)

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Model

None

Model

FOCUS Plus 550 Gold

Model

PRIME Ultra Gold 550

Model

None

Part #

M12II 520 Bronze

Part #

SSR-550FX

Part #

SSR-550GD2

Part #

SSR-550FM

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Manufacturer

SeaSonic

Form Factor

ATX

Form Factor

ATX

Form Factor

ATX

Form Factor

ATX

Efficiency Rating

80+ Bronze

Efficiency Rating

80+ Gold

Efficiency Rating

80+ Gold

Efficiency Rating

80+ Gold

Wattage

520 W

Wattage

550 W

Wattage

550 W

Wattage

550 W

Modular

Full

Modular

Full

Modular

Full

Modular

Semi

Color

None

Color

None

Color

Black

Color

None

Type

ATX12V / EPS12V

Type

ATX

Type

ATX

Type

ATX

Fanless

No

Fanless

No

Fanless

No

Fanless

No

PCIe 6+2-Pin Connectors

1

PCIe 6+2-Pin Connectors

2

PCIe 6+2-Pin Connectors

2

PCIe 6+2-Pin Connectors

2

PCIe 6-Pin Connectors

1

PCIe 6-Pin Connectors

None

PCIe 6-Pin Connectors

None

PCIe 6-Pin Connectors

None

EPS Connectors

1

EPS Connectors

1

EPS Connectors

1

EPS Connectors

1

SATA Connectors

6

SATA Connectors

6

SATA Connectors

6

SATA Connectors

6

Molex 4-Pin Connectors

6

Molex 4-Pin Connectors

3

Molex 4-Pin Connectors

3

Molex 4-Pin Connectors

3

Efficiency

> 87%

Efficiency

None

Efficiency

None

Efficiency

None

Output

None

Output

+3.3V@20A, +5V@20A, +12V@45A, -12V@0.3A, +5Vsb@3A

Output

None

Output

None

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add arrow-down arrow-left arrow-right arrow-up authorcheckmark clipboard combo comment delete discord dots drag-handle dropdown-arrow errorfacebook history inbox instagram issuelink lock markup-bbcode markup-html markup-pcpp markup-cyclingbuilder markup-plain-text markup-reddit menu pin radio-button save search settings share star-empty star-full star-half switch successtag twitch twitter user warningwattage weight youtube