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be quiet! Pure Power 12 550W vs FSP Hydro K PRO 750W: Comparison
be quiet! Pure Power 12 550W and FSP Hydro K PRO 750W separate most on pcie 8-pin connectors: be quiet! Pure Power 12 550W at 2, FSP Hydro K PRO 750W at 4, 50% in favour of FSP Hydro K PRO 750W. Warranty splits them by another 50%, this time favouring be quiet! Pure Power 12 550W. They match on 6 other specifications, including form factor, single +12v rail and zero-rpm mode. On price, FSP Hydro K PRO 750W sits at $64.99 against $74.99 for be quiet! Pure Power 12 550W.
Specs
| Specification |  |  |
|---|---|---|
| Brand | be quiet! | FSP |
| Wattage | 550 W-27% | 750 W |
| 80 PLUS Rating | Gold | Bronze |
| ATX Standard | ATX 3.1 | ATX 2.x |
| Form Factor | ATX | ATX |
| +12V Rail Amperage | 45.8 A | 62.5 A |
| Single +12V Rail | Yes | Yes |
| 12V-2x6 Connectors | 1 | 0 |
| Hold-Up Time | 16.6 ms-2% | 17 ms |
| Zero-RPM Mode | No | No |
| Sleeved Cables | Yes | No |
| PCIe 8-pin Connectors | 2-50% | 4 |
| Connector Count | 1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6, 2x PCIe 6+2-pin, 5x SATA, 1x Molex (all fixed) | 1x 24-pin ATX, 2x EPS 4+4, 4x PCIe 6+2-pin, 8x SATA, 2x Molex, 1x floppy |
| Fan Size | 120 mm | 120 mm |
| Fan Model / Bearing | 120mm be quiet! fan, rifle bearing | 120mm hydraulic bearing (HYB) |
| OEM / Platform | HEC | FSP |
| EPS 8-pin Connectors | 1 | 2 |
| SATA Connectors | 5 | 8 |
| Molex Connectors | 1 | 2 |
| Cable Lengths | 24-pin 600mm, max cable length 550mm | ATX 550mm, EPS 600mm, PCIe 600mm, SATA 500-750mm |
| Length | 160 mm | 140 mm |
| Colour | Black | Black |
| Fan Bearing | Rifle | Hydro |
| MTBF | 100000 hours | 100000 hours |
| Modularity | Non-Modular | Semi-Modular |
| Protections | OTP, OCP, OPP, SCP, OVP, UVP, SIP | OCP, OVP, SCP, OPP |
| Warranty | 10 years | 5 years-50% |
| Model | Pure Power 12 550W | Hydro K PRO 750W |
| Typical Price | $74.99 | $64.99 |
| Source URL | https://www.bequiet.com/en/powersupply/5684 | https://www.fsplifestyle.com/en/product/HydroKPRO750W.html |
Price comparison
| Retailer | be quiet! Pure Power 12 550W | FSP Hydro K PRO 750W |
|---|---|---|
| Amazon | $74.99 View on Amazon | |
| Newegg | View on Newegg | |
| Consumercarts listing | $64.99 View on Consumercarts listing |
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 550W
7.8 / 10 Expert Rating
A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.
FSP Hydro K PRO 750W
7 / 10 Expert Rating
A solid 750W Bronze-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.
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