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be quiet! Pure Power 12 M 750W vs Corsair CX550M: Comparison
be quiet! Pure Power 12 M 750W and Corsair CX550M separate most on warranty: be quiet! Pure Power 12 M 750W at 10 years, Corsair CX550M at 5 years, 50% in favour of be quiet! Pure Power 12 M 750W. Hold-Up Time splits them by another 48%, again favouring be quiet! Pure Power 12 M 750W. They match on 7 other specifications, including form factor, zero-rpm mode and pcie 8-pin connectors. On price, Corsair CX550M sits at $54.99 against $99.99 for be quiet! Pure Power 12 M 750W.
Specs
| Specification |  |  |
|---|---|---|
| Brand | be quiet! | Corsair |
| Wattage | 750 W | 550 W-27% |
| 80 PLUS Rating | Gold | Bronze |
| ATX Standard | ATX 3.0 | ATX 2.x |
| Form Factor | ATX | ATX |
| Single +12V Rail | No | Yes |
| 12V-2x6 Connectors | 1 | 0 |
| Hold-Up Time | 21.4 ms | 11.1 ms-48% |
| Zero-RPM Mode | No | No |
| Sleeved Cables | Yes | No |
| PCIe 8-pin Connectors | 2 | 2 |
| Connector Count | 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x 12VHPWR (600W), 2x PCIe 6+2-pin, 5x SATA, 2x Molex | 1x 24-pin ATX (fixed), 1x EPS 4+4 (fixed), 2x PCIe 6+2-pin, 6x SATA, 4x Molex |
| Fan Size | 120 mm | 120 mm |
| Fan Model / Bearing | 120mm rifle bearing | 120mm rifle bearing (HA1225H12F-Z) |
| EPS 8-pin Connectors | 2 | 1 |
| SATA Connectors | 5 | 6 |
| Molex Connectors | 2 | 4 |
| Length | 160 mm | 140 mm |
| Colour | Black | Black |
| Fan Bearing | Rifle | Rifle |
| MTBF | 100000 hours | 100000 hours |
| Modularity | Fully Modular | Semi-Modular |
| Protections | OTP, OCP, OPP, SCP, OVP, UVP, SIP | OCP, OVP, SCP, OTP |
| Warranty | 10 years | 5 years-50% |
| Model | Pure Power 12 M 750W | CX550M |
| Typical Price | $99.99 | $54.99 |
| Source URL | https://www.bequiet.com/en/powersupply/4073 | https://www.corsair.com/us/en/p/psu/cp-9020220-na/cx-m-series-cx550m-550-watt-80-plus-bronze-semi-modular-atx-psu-cp-9020220-na |
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 | |
| Newegg | View on Newegg |
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.
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