RM Series RM850 — 850 Watt 80 PLUS Gold Certified Fully Modular PSU
CORSAIR RM Series fully modular power supplies deliver consistent 80 PLUS Gold efficient power to your PC, with virtually silent operation.
Ready For Modern Standby
Modern Standby is a upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast, as well as maintain a network connection during sleep to continue downloading updates and receive emails and notifications – just like your phone. Best of all, it does this with less overall power consumption.
To make use of Modern Standby, a compatible motherboard and CPU are also required.
80 Plus Gold Certified
The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill.
Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply.
Zero RPM Fan Mode
The RM Series' cooling fan doesn't spin until you need it, for near-silent operation at low and medium loads.
Tuned For Low Noise Operation
A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it's needed, resulting in virtually silent operation.
A 160mm-long casing ensures an easy fit in almost all modern enthusiast PC cases, providing more space for cable management and airflow in your chassis.
CORSAIR provides a ten-year warranty on all RM Series power supplies; your guarantee of reliable operation that will last across several system builds. If you need help, CORSAIR customer service and tech support are always on hand.
PCI-E connectors to power dual or triple (RM850 only) GPUs for your most ambitious PC gaming builds.
Fully Modular Cables
Use only the cables you need for quick and easy installation, simplifying routing and cable management. Store your unused cables in the included cable bag.
Add the Finishing Touch
Complement your system's look with CORSAIR Premium Individually Sleeved Type 4 Gen 4 PSU Cables (sold separately), available in seven different colors and patterns. These durable and flexible cables come in triple-layer mesh paracord sleeving with included interlocking cable combs for an easy-to-install, professional looking build.
- Form Factor: ATX
- Modular: Fully Modular
- Series: Corsair RM
- Compatability: ATX12V v2.52 and EPS 2.92
- Wattage: 850 W
- Connectors: 2 x 4+4-pin CPU +12V (EPS)
4 x 4-pin Molex
6 x 6+2-pin PCIe
12 x SATA
- Rail Design: Single Rail
- PFC: Active PFC
- Fan Type: 135mm Rifle Bearing Fan
- #Hide#Fan Bearing: Rifle Bearing
- 80+ Certification: 80+ Gold
- Efficiency: 92%
- MTBF: "100,000 hours"
- Protection: Over Voltage
- Features: See Overview
- Package Contents: RM Series Performance ATX Power Supply
AC Power cord
DC Modular Cable Set
- Weight/Dimensions: 150 x 86 x 160 mm
- Package Weight: 2.2000 kg
- Warranty: 10 Years
Free shipping is available to all UK residents.
These orders will be sent on a Royal Mail 48 hour tracked service. If you require a more immediate delivery service, we use DHL. However, this courier service will incur an extra cost as stated at the checkout.
We also use DHL/Royal Mail for all European shipments, if you require a European delivery service please select your country at the check out for a shipping price. For international shipments outside of Europe, please contact us directly for a bespoke quote.
We understand that occasionally products may need to be returned to us, but we are here to help make the process easier.
For all returns to Blackmore IT you will need to complete a return merchandise authorisation (RMA) form in order for us to process your refund or replacement during the product's warranty period. Please print this return documentation by clicking here and ensure you include this documentation with a copy of your proof of purchase within the return.
If you need to return your purchase from us, whether you bought it online or over the phone, the product can be returned for a full refund within 21 days of delivery as long as it's still in its original, unopened anti static (a silver coloured bag or pink bubble material) packaging. Please follow the returns policy above.
We sincerely apologise if your product develops a fault within its warranty period, and if the fault occurs within 30 days of purchase (or delivery) we will always offer you an exchange or refund. However, in all cases we do reserve the right to inspect the product and verify the fault, if you would like to discuss this further please call us on 0808 196 2772, alternatively follow the returns policy above.
We want you to be absolutely satisfied with your Blackmore IT product and would recommend that, where practicable, you unpack and check it for any transit damage as soon as your product arrives. If you receive a damaged product please call us as soon as possible on 0808 196 2772 to inform us about this issue.
We will then arrange an exchange or refund as soon as possible, once the return has been processed as per the above returns policy.
Our Return to Base (RTB) warranties mean if the item doesn't work on delivery we cover all costs of getting a replacement sent out immediately. However, if the item works on delivery but within 6 months breaks then we ask you to send it back to us for repair or replacement.