Compare Power Supplies

Compare Corsair RM550 vs RM1000x SHIFT 2025

Corsair RM550 and CORSAIR RM1000x SHIFT 2025 are both power supplies with the same Molex Connectors (4). 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 RM550

CORSAIR RM1000x SHIFT 2025

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Pangoly Score (How do we rate?)

93

Pangoly Score (How do we rate?)

-

Brand

Corsair

Brand

Corsair

Model

CP-9020053-UK
CP-9020053-NA
CP-9020053-EU

Model

CP-9020300-NA
CP-9020300-EU
CP-9020300-UK
CP-9020300-AU

Release Date

📅 May 2014

Release Date

📅 November 2025

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

User reviews

★★★★★

(148 reviews)

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Price history

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Price history

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Compatible PC parts

Graphics Cards ► Cases ►

Compatible PC parts

Graphics Cards ► Cases ►

Pros

Very good voltage regulation
Very good ripple suppression
Fully modular
Silent up to ~60% load

Pros

-

Cons

A bit loud under heavy load

Cons

-

Wattage

550 W

Wattage

1000 W

Type

ATX

Type

ATX

Modular

Full

Modular

Full Shifted

Efficiency

80+ Gold

Efficiency

-

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

2

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

6

SATA Connectors

12

Molex Connectors

4

Molex Connectors

4

Length

-

Length

160 mm

-

Options (1)

CORSAIR RM850x Shift 2025

850W
$149.99

Comparison and key differences summary

Reasons to buy the Corsair RM550:

34% cheaper, you can save $63.00

Reasons to buy the CORSAIR RM1000x SHIFT 2025:

Newer Product, it was released around 12 years later
+450 Watts available
+2 PCI-Express 6+2 Pin connectors available
+1 EPS connectors available
+6 SATA connectors available

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