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be quiet! Power Zone 2 850W vs Corsair CX650M: Comparison
be quiet! Power Zone 2 850W and Corsair CX650M separate most on warranty: be quiet! Power Zone 2 850W at 10 years, Corsair CX650M at 5 years, 50% in favour of be quiet! Power Zone 2 850W. PCIe 8-pin Connectors splits them by another 33%, again favouring be quiet! Power Zone 2 850W. They match on 6 other specifications, including form factor, single +12v rail and eps 8-pin connectors. On price, Corsair CX650M sits at $69.99 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 | Bronze |
| ATX Standard | ATX 3.1 | ATX 2.x |
| Form Factor | ATX | ATX |
| +12V Rail Amperage | 70.8 A | 54 A |
| Single +12V Rail | Yes | Yes |
| Cybenetics Efficiency | Platinum | Silver |
| Cybenetics Noise | A+ | Standard++ |
| 12V-2x6 Connectors | 1 | 0 |
| Zero-RPM Mode | Yes | No |
| Sleeved Cables | Yes | No |
| Measured Avg Efficiency | 90.4 % | 85.65 % |
| PCIe 8-pin Connectors | 3 | 2-33% |
| Measured Average Noise | 19.84 dBA | 33.39 dBA |
| 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 (fixed), 2x EPS 4+4 (1 fixed, 1 modular), 2x PCIe 6+2-pin, 6x SATA, 4x Molex |
| Fan Size | 140 mm | 120 mm |
| Fan Model / Bearing | Pure Wings 3 140mm (BQ PUW3-14025-HR), rifle bearing | 120mm rifle bearing (HA1225H12F-Z) |
| OEM / Platform | FSP | CWT |
| EPS 8-pin Connectors | 2 | 2 |
| SATA Connectors | 7 | 6 |
| Molex Connectors | 1 | 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, OPP, SCP, OTP |
| Warranty | 10 years | 5 years-50% |
| Model | Power Zone 2 850W | CX650M |
| Typical Price | $124.99 | $69.99 |
| Source URL | https://www.bequiet.com/en/powersupply/5764 | https://www.corsair.com/us/en/p/psu/cp-9020221-na/cx-m-series-cx650m-650-watt-80-plus-bronze-semi-modular-atx-psu-cp-9020221-na |
Price comparison
| Retailer | be quiet! Power Zone 2 850W | Corsair CX650M |
|---|---|---|
| Consumercarts listing | $124.99 View on Consumercarts listing | $69.99 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 CX650M
7 / 10 Expert Rating
A solid 650W Bronze-rated ATX unit for a mainstream single-GPU gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
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