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be quiet! Power Zone 2 850W vs Corsair RM650x: Comparison
be quiet! Power Zone 2 850W and Corsair RM650x separate most on pcie 8-pin connectors: be quiet! Power Zone 2 850W at 3, Corsair RM650x at 2, 33% in favour of be quiet! Power Zone 2 850W. Wattage splits them by another 24%, again favouring be quiet! Power Zone 2 850W. They match on form factor, colour and modularity. On price, Corsair RM650x sits at $99.99 against $124.99 for be quiet! Power Zone 2 850W.
Specs
| Specification |  |  |
|---|---|---|
| Brand | be quiet! | Corsair |
| Wattage | 850 W | 650 W-24% |
| 80 PLUS Rating | Platinum | Gold |
| ATX Standard | ATX 3.1 | ATX 2.x |
| Form Factor | ATX | ATX |
| Single +12V Rail | Yes | true |
| Cybenetics Efficiency | Platinum | Gold |
| Cybenetics Noise | A+ | A- |
| 12V-2x6 Connectors | 1 | 0 |
| Hold-Up Time | 21.1 ms | 17-19% |
| Zero-RPM Mode | Yes | true |
| Sleeved Cables | Yes | No |
| PCIe 8-pin Connectors | 3 | 2-33% |
| Connector Count | 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x P4, 1x 12V-2x6 (600W), 3x PCIe 6+2-pin, 7x SATA, 1x Molex | 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 6x SATA, 3x Molex |
| Fan Size | 140 mm | 135 |
| Fan Model / Bearing | Pure Wings 3 140mm (BQ PUW3-14025-HR), rifle bearing | 135mm FDB, Zero RPM below 40% load |
| OEM / Platform | FSP | CWT |
| Cable Lengths | ATX 590mm, EPS 700mm, PCIe 600mm, 12V-2x6 600mm, SATA 550+150+150+155mm and 500+150+150mm | 24-pin 610mm, EPS 650mm, PCIe 650mm, SATA 760mm |
| Length | 160 mm | 160 |
| Colour | Black | Black |
| MTBF | 100000 hours | 100000 |
| Modularity | Fully Modular | Fully Modular |
| Protections | OTP, OCP, OPP, SCP, OVP, UVP, SIP | OCP, OVP, OPP, SCP, OTP, UVP |
| Warranty | 10 years | 10 |
| Model | Power Zone 2 850W | RM650x (2021) |
| Typical Price | $124.99 | $99.99 |
Price comparison
| Retailer | be quiet! Power Zone 2 850W | Corsair RM650x |
|---|---|---|
| Consumercarts listing | $124.99 View on Consumercarts listing | $99.99 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
Corsair RM650x
8.2 / 10 Expert Rating
The 650x is Corsair's mainstream sweet spot: quiet Zero RPM idling, a 10-year warranty, and enough headroom for a mid-range gaming build without overspending on wattage you won't use.
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