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be quiet! Pure Power 12 M 750W vs Corsair CX550M: Comparison
be quiet! Pure Power 12 M 750W vs Corsair CX550M: the wattage difference
The gap that matters here is wattage: be quiet! Pure Power 12 M 750W 750 W against Corsair CX550M 550 W, which puts be quiet! Pure Power 12 M 750W 27% ahead. Add warranty to that, 10 years on the be quiet! Pure Power 12 M 750W versus 5 years on the Corsair CX550M, and the pattern holds. Hold-up time runs the same way, 21.4 ms on the be quiet! Pure Power 12 M 750W versus 11.1 ms on the Corsair CX550M, another win for be quiet! Pure Power 12 M 750W.
Who each one is for
Buy the be quiet! Pure Power 12 M 750W for anyone who wants fully modular cabling with native 12V-2x6 support and systems where a 5-year warranty and Gold-tier efficiency matter, though it is not built for builds needing more than 750W of continuous headroom and buyers who need the smallest possible SFX/SFX-L footprint. It also earns its place with builders targeting a popular RTX 4070 Ti / RTX 5070-class gaming build. The Corsair CX550M is the one to take for entry-level gaming builds under $700 total and GTX 1660 Super or RX 6600-class GPUs, though it is not the pick for high-end GPUs or multi-GPU setups and anyone wanting a fully modular 24-pin/EPS.
Which is cheaper, be quiet! Pure Power 12 M 750W or Corsair CX550M?
The be quiet! Pure Power 12 M 750W asks 82% more, $99.99 against $54.99 for the Corsair CX550M.
Frequently asked questions
Do the be quiet! Pure Power 12 M 750W and Corsair CX550M differ on modularity?
Yes. Modularity reads Fully Modular on the be quiet! Pure Power 12 M 750W versus Semi-Modular on the Corsair CX550M.
Is the Fan Size the same on the be quiet! Pure Power 12 M 750W and Corsair CX550M?
It is. Both are listed at 120 mm, so it is not a reason to pick one over the other.
Which is cheaper, be quiet! Pure Power 12 M 750W or Corsair CX550M?
The be quiet! Pure Power 12 M 750W asks 82% more, $99.99 against $54.99 for the Corsair CX550M.
Specs and benchmarks
Brand
- be quiet! Pure Power 12 M 750W
- be quiet!
- Corsair CX550M
- Corsair
Wattage
- be quiet! Pure Power 12 M 750W
- 750 WBest
- Corsair CX550M
- 550 W-27%
80 PLUS Rating
- be quiet! Pure Power 12 M 750W
- Gold
- Corsair CX550M
- Bronze
Model Number
- be quiet! Pure Power 12 M 750W
- Pure Power 12 M 750W
- Corsair CX550M
- CX550M
ATX Standard
- be quiet! Pure Power 12 M 750W
- ATX 3.0
- Corsair CX550M
- ATX 2.x
Form Factor
- be quiet! Pure Power 12 M 750W
- ATX
- Corsair CX550M
- ATX
Single +12V Rail
- be quiet! Pure Power 12 M 750W
- No
- Corsair CX550M
- Yes
12V-2x6 Connectors
- be quiet! Pure Power 12 M 750W
- 1
- Corsair CX550M
- 0
Hold-Up Time
- be quiet! Pure Power 12 M 750W
- 21.4 ms
- Corsair CX550M
- 11.1 ms-48%
Zero-RPM Mode
- be quiet! Pure Power 12 M 750W
- No
- Corsair CX550M
- No
Sleeved Cables
- be quiet! Pure Power 12 M 750W
- Yes
- Corsair CX550M
- No
PCIe 8-pin Connectors
- be quiet! Pure Power 12 M 750W
- 2
- Corsair CX550M
- 2
Connector Count
- be quiet! Pure Power 12 M 750W
- 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x 12VHPWR (600W), 2x PCIe 6+2-pin, 5x SATA, 2x Molex
- Corsair CX550M
- 1x 24-pin ATX (fixed), 1x EPS 4+4 (fixed), 2x PCIe 6+2-pin, 6x SATA, 4x Molex
Fan Size
- be quiet! Pure Power 12 M 750W
- 120 mm
- Corsair CX550M
- 120 mm
Fan Model / Bearing
- be quiet! Pure Power 12 M 750W
- 120mm rifle bearing
- Corsair CX550M
- 120mm rifle bearing (HA1225H12F-Z)
EPS 8-pin Connectors
- be quiet! Pure Power 12 M 750W
- 2
- Corsair CX550M
- 1
SATA Connectors
- be quiet! Pure Power 12 M 750W
- 5
- Corsair CX550M
- 6
Molex Connectors
- be quiet! Pure Power 12 M 750W
- 2
- Corsair CX550M
- 4
Length
- be quiet! Pure Power 12 M 750W
- 160 mm
- Corsair CX550M
- 140 mm
Colour
- be quiet! Pure Power 12 M 750W
- Black
- Corsair CX550M
- Black
Fan Bearing
- be quiet! Pure Power 12 M 750W
- Rifle
- Corsair CX550M
- Rifle
MTBF
- be quiet! Pure Power 12 M 750W
- 100000 hours
- Corsair CX550M
- 100000 hours
Modularity
- be quiet! Pure Power 12 M 750W
- Fully Modular
- Corsair CX550M
- Semi-Modular
Protections
- be quiet! Pure Power 12 M 750W
- OTP, OCP, OPP, SCP, OVP, UVP, SIP
- Corsair CX550M
- OCP, OVP, SCP, OTP
Price
- be quiet! Pure Power 12 M 750W
- 99.99 USD
- Corsair CX550M
- 54.99 USD
Warranty
- be quiet! Pure Power 12 M 750W
- 10 yearsBest
- Corsair CX550M
- 5 years-50%
Which one should you pick?
Choose be quiet! Pure Power 12 M 750W if you want the higher wattage (750 W vs 550 W), the higher Hold-Up time (21.4 ms vs 11.1 ms) and the higher PCIe 8-pin connectors (2 vs 2).
Choose Corsair CX550M if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | be quiet! Pure Power 12 M 750W | Corsair CX550M |
|---|---|---|
| Consumercarts listing | $99.99 View on Consumercarts listing | |
| Amazon | $54.99 View on Amazon |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
be quiet! Pure Power 12 M 750W
8.2 / 10 Expert Rating
A solid 750W Gold-rated ATX unit for a popular RTX 4070 Ti / RTX 5070-class gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
Corsair CX550M
6.9 / 10 Expert Rating
A safe, unglamorous budget Bronze pick for entry-level gaming PCs that don't need Gold efficiency or full modularity.