be quiet!

be quiet! Pure Power 12 550W

Expert rating7.8 / 10

Wattage:: 550 W
80 PLUS Rating:: Gold
Modularity:: Non-Modular
ATX Standard:: ATX 3.1

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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: be quiet! Last updated: 2026-09-12

Where to buy

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be quiet! Pure Power 12 550W Review

If you want a be quiet! power supply for a quiet mainstream build but don't need the full modularity of the M variant, the Pure Power 12 550W is the semi-modular entry point into be quiet!'s Gold-rated Pure Power 12 line.

We think this hits a sweet spot for a quiet mid-range gaming PC: Gold efficiency, be quiet!'s reputation for a genuinely quiet fan curve, and a fixed 24-pin/EPS setup that keeps the price below the fully modular Pure Power 12 M.

Acoustic Focus

be quiet! tunes the fan curve on Pure Power 12 conservatively, favoring quiet operation over squeezing out maximum efficiency at full load, which matches the brand's whole-company focus on acoustics over raw numbers.

Comparison to Alternatives

Against the be quiet! Pure Power 12 M 750W already in the catalog, the 550W drops 200W of headroom and full modularity to hit a lower price for smaller builds. Against the Corsair CX550M, the Pure Power 12 550W adds Gold efficiency and a quieter fan curve over Corsair's Bronze-rated budget unit at a similar wattage.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating7.8 / 10

A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.

Best for

Quiet mainstream gaming builds
RTX 4060/RX 7600-class GPUs
Noise-sensitive living-room or office PCs

Not for

Anyone wanting fully modular cables
High-end or multi-GPU builds
ATX 3.0/native 12V-2x6 requirements

Specifications

What these specs mean

Identity

Brand	be quiet!
Model Number	Pure Power 12 550W

Output and rails

+12V Rail Amperage	45.8 A
Single +12V Rail	Yes

Standards and compliance

PCIe CEM Standard	PCIe 5.1
Hold-Up Time	16.6 ms

Connector inventory

EPS 8-pin Connectors	1
SATA Connectors	5
Molex Connectors	1

Form factor and fit

Length	160 mm
Colour	Black

Cooling

Fan Bearing	Rifle

Build quality

MTBF	100000 hours

Cables

Modularity	Non-Modular

Monitoring, protection and price

Protections	OTP, OCP, OPP, SCP, OVP, UVP, SIP
Price	74.99 USD
Warranty	10 years

Wattage	550 W
80 PLUS Rating	Gold
ATX Standard	ATX 3.1
Form Factor	ATX
12V-2x6 Connectors	1
Zero-RPM Mode	No
Sleeved Cables	Yes
PCIe 8-pin Connectors	2
Connector Count	1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6, 2x PCIe 6+2-pin, 5x SATA, 1x Molex (all fixed)
Fan Size	120 mm
Fan Model / Bearing	120mm be quiet! fan, rifle bearing
OEM / Platform	HEC
Cable Lengths	24-pin 600mm, max cable length 550mm

FAQs

What are the key specifications of the be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick)?

Key specs for the be quiet! Pure Power 12 550W: Wattage 550 W, Modularity Non-Modular, Fan Size 120 mm, Warranty 10 years, 80 PLUS Rating Gold, Form Factor ATX.

Will the be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick) work with my current setup?

The be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick) lists Wattage is 550 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick) best suited to?

Best suited to: Quiet mainstream gaming builds; RTX 4060/RX 7600-class GPUs; Noise-sensitive living-room or office PCs.

What are the drawbacks of the be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick)?

Not the best fit for: Anyone wanting fully modular cables; High-end or multi-GPU builds; ATX 3.0/native 12V-2x6 requirements.