Corsair RM850x Gold PSU
£146.15 inc VAT
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About This Item
- 850 W ATX 3.1 power supply with PCIe 5.1 support
- Cybenetics Gold certified for high energy efficiency
- 100% modular Type-5 connectors for clean builds
- 140 mm hydrodynamic bearing fan with Zero RPM mode
- Japanese 105°C electrolytic capacitors for reliability
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Corsair RM850x | 850W Cybenetics Gold Modular PSU
The Corsair RM850x Cybenetics Gold (2024) is a high-performance ATX 3.1 power supply designed for modern gaming and power-user PCs. With 850W of reliable power, full modularity, and Cybenetics Gold efficiency certification, it delivers stable energy with minimal waste. This PSU supports the latest PCIe 5.1 graphics cards and includes a 140mm fan with Zero RPM mode for silent operation under light loads.
Key Specifications
| Metric | Spec |
|---|---|
| Power Output | 850W |
| Efficiency Certification | Cybenetics Gold |
| Modularity | 100% modular |
| ATX Standard | ATX 3.1 / PCIe 5.1 |
| Fan Size | 140mm with Zero RPM mode |
ATX 3.1 and PCIe 5.1 Ready for Next-Gen Hardware
The RM850x Cybenetics Gold (2024) is fully compliant with ATX 3.1 and PCIe 5.1 standards, ensuring seamless compatibility with the latest graphics cards that feature the 12V-2×6 connector. This makes it future-proof for upcoming hardware releases, allowing you to upgrade your system without worrying about power delivery limitations.
100% Modular Design for Clean Builds
With complete cable modularity, you can connect only the cables you need, reducing clutter inside your case. This not only improves airflow but also makes cable management much easier, resulting in a cleaner, more professional-looking build. The Type-5 connectors ensure secure and reliable connections throughout your system.
Ultra-Quiet Operation with Advanced Cooling
The 140mm hydrodynamic bearing fan with magnetic dome structure operates silently under normal conditions thanks to the Zero RPM mode. When your system is under light or medium load, the fan stops completely, eliminating noise. For heavier loads, the fan automatically adjusts speed to maintain optimal temperatures without excessive noise.
Japanese Capacitors for Enhanced Reliability
Built with 100% Japanese industrial-grade 105°C electrolytic capacitors, this PSU offers exceptional durability and stable power delivery even under demanding conditions. These high-quality components ensure long-term reliability and consistent performance, protecting your valuable hardware from power fluctuations.
In the Box
- Corsair RM850x Cybenetics Gold (2024) power supply
- Modular cables
- Mounting screws
- User manual
Key Points to Check
- Confirm your PC case supports ATX/EPS power supply dimensions (160mm x 150mm x 86mm)
- Verify your graphics card requires a 12V-2×6 connector for PCIe 5.1 compatibility
- Check if your system’s total power draw is within the 850W capacity
- Ensure you have the correct power cable for your region
Frequently Asked Questions
Is this PSU compatible with older ATX 2.0 systems?
Can I use this with a multi-GPU setup?
What does Zero RPM mode mean?
How efficient is the Cybenetics Gold certification?
Are the cables fully modular or partially?
Final thoughts
The Corsair RM850x Cybenetics Gold (2024) is an excellent choice for gamers and power users building modern PCs who need reliable, efficient power with quiet operation. Its ATX 3.1 and PCIe 5.1 compliance make it ideal for current and near-future hardware configurations. Covered by the applicable manufacturer warranty, this PSU offers peace of mind alongside its technical capabilities.
| Product name | Corsair RM850x Cybenetics Gold (2024) |
|---|---|
| Brand | Corsair Corsair |
| Model | CP-9020270-EU |
| Power | 850 W |
| 80 PLUS certification | No |
| Cybenetics certification | Yes |
| 80 PLUS / Cybenetics certification | Cybenetics Gold, 80 PLUS Gold |
| Modular | Yes |
| Modularity | 100% modular |
| Power connectors | 2 X +12V (Power supply P8 – 2 x P4), 8 X Serial ATA power supply, 1 X ATX 24 Pin, 3 X Molex (4 Pin) Female, 3 X PCI Express 6 + 2 Pin, 1 X PCI Express 16 Pin (12V-2×6) |
| PSU-CM compatibility | +12V P4, +12V P4 and +12V P4, +12V P8, +12V P8 and +12V P4, +12V P8 and +12V P8 |
| Fan size | 140mm |
| Silent | Yes |
| Power supply type PC | Active |
| Power format | ATX/EPS |
| Power supply standard | EPS12V, ATX12V |
| ATX 3.0 | Yes |
| ATX 3.1 | Yes |
| Multi-GPU | None |
| Typical use | Desktop computer |
| Color | Black |
| LED RGB | No |
| Height | 86 mm |
| Width | 150 mm |
| Length | 160 mm |
| Commercial warranty | Seller 2 years |
| Legal warranty | See terms & conditions |
| Responsible person | CORSAIR Memory BV |
| Postal address | Wormerweg 8, 1311 XB Almere, Pays-Bas. |
| Electronic Address | Click here |
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