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Corsair RM850e (2025) Fully Modular Low-Noise ATX Power Supply – 850W, ATX 3.1 & PCIe 5.1 Compliant – Black
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Condition Selected: New
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Condition details
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Each condition grade explains the item’s expected cosmetic appearance. Used items are checked and tested before dispatch.
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Simple condition guide
Condition guide
New
Brand-new item
A brand-new, unused, unopened item in its original packaging, never worn, used, or activated, with all original packaging intact.
Like New
Pristine condition
The item appears as if it has just come out of a retail box. There are no signs of wear, and all original protective materials are intact. The item may have been opened or used very minimally but retains its pristine condition, and all original accessories are included.
Very Good
Minimal wear
The item shows minimal wear from general use and is 100% operational and functions as intended. It may have minor cosmetic imperfections but performs well, and may be missing non-essential accessories.
Good
Noticeable wear
The item is fully operational and functions as intended, but has noticeable wear from previous use. It may have aesthetic imperfections such as scratches or dents, and may be missing non-essential accessories.
Fair
Fairly worn
The item is fairly worn but continues to work perfectly. Signs of wear can include aesthetic issues such as scratches, dents, and worn corners, and it may be missing non-essential accessories.
The Corsair RM850e (2025) is a next-generation fully modular 850W power supply designed for high-performance gaming PCs and workstations. Featuring ATX 3.1 and PCIe 5.1 compliance, it delivers stable, efficient power for the latest GPUs and processors. Built with 105°C-rated Japanese capacitors, Cybenetics Gold-certified efficiency, and Zero RPM cooling, the RM850e ensures quiet, reliable operation even under heavy load — making it the perfect foundation for modern high-end builds.
- 850W continuous power output to support demanding GPUs and multi-core CPUs.
- ATX 3.1 and PCIe 5.1 compliant – includes a native 12V-2x6 cable for next-gen graphics cards.
- 80 PLUS Gold & Cybenetics Gold efficiency ensures reduced power waste and lower heat output.
- 105°C-rated Japanese electrolytic capacitors deliver exceptional durability and electrical stability.
- Low-noise operation – the 120mm fluid dynamic bearing fan runs silently at low loads via Zero RPM Fan Mode.
- Fully modular cabling allows easy installation, clean cable management, and improved airflow.
- Modern Standby support ensures rapid wake-from-sleep and power efficiency in idle mode.
- Compact 140mm length fits easily into a wide range of ATX cases.
- Comprehensive protection circuits include OVP, UVP, SCP, OTP, and OCP for total system safety.
- Built to last – rigorously tested for long-term stability under continuous load.
- Backed by a 7-year Corsair warranty for peace of mind.
The Corsair RM850e (2025) is built for the latest PC hardware, offering quiet, efficient, and dependable power delivery that meets the needs of modern enthusiasts and professionals.
| Specification | Details |
|---|---|
| Model | Corsair RM850e (2025) |
| Power Output | 850W Continuous |
| Form Factor | ATX 3.1 |
| Efficiency Rating | 80 PLUS Gold / Cybenetics Gold |
| PCIe Standard | PCIe 5.1 (12V-2x6 Cable Included) |
| Modularity | Fully Modular |
| Fan Type | 120mm Fluid Dynamic Bearing Fan |
| Fan Mode | Zero RPM at Low Load |
| Capacitors | 105°C Japanese Electrolytic |
| Standby Mode | Modern Standby Support |
| Protection Features | OVP, UVP, SCP, OTP, OCP |
| MTBF | 100,000 Hours |
| Dimensions (L×W×H) | 150 × 140 × 86 mm |
| Weight | Approx. 1.6 kg |
| Colour | Black |
| Cables Included | 1× ATX 24-pin, 2× EPS 8-pin, 3× PCIe 8-pin, 1× 12V-2x6, SATA & Peripheral |
Please note: Next Day Delivery does not include weekends. Saturday delivery is only available when Express Delivery is selected on Friday before 4:00 p.m.
Delivery AreasNext Day Delivery is available to mainland UK, excluding:
AB, IV, KW, PA, PH, HS, KA, ZE, PO30–PO41, IM, JE, GY, BT, TR21–TR25
Delivery to these areas may take 3–5 working days.
Working days are Monday–Friday, excluding public holidays.
Shop with confidence with our 30-day return policy. Changed your mind? You can return your item within 30 days of delivery.
If your item is faulty, damaged or not as described, we’ll provide a FREE prepaid return label.
How it works:
- Contact us within 30 days.
- Return your item using the instructions provided.
- Once received and checked, we’ll arrange your refund, replacement or repair.
Simple returns. No return postage to pay if your item is faulty.
For more information, please see our Returns Policy.
A brand-new, unused, unopened item in its original packaging, never worn, used, or activated, with all original packaging intact.
Like NewThe item appears as if it has just come out of a retail box. There are no signs of wear, and all original protective materials are intact. The item may have been opened or used very minimally but retains its pristine condition, and all original accessories are included.
Very GoodThe item shows minimal wear from general use and is 100% operational and functions as intended. It may have minor cosmetic imperfections but performs well, and may be missing non-essential accessories.
GoodThe item is fully operational and functions as intended, but has noticeable wear from previous use. It may have aesthetic imperfections such as scratches or dents, and may be missing non-essential accessories.
FairThe item is fairly worn but continues to work perfectly. Signs of wear can include aesthetic issues such as scratches, dents, and worn corners, and it may be missing non-essential accessories.
| SKU: |
RM136224SN0 |
|---|---|
| EAN/UPC: |
840006691266 |
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Klarna's Pay in 3 / Pay in 30 days are unregulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Late fees may apply.
Buy now, pay later interest free instalments.
No hidden fees. This is a credit product. 18+.
Pay every 2 weeks in 4 interest-free payments.
Clearpay credit subject to status. Use responsibly as late fees up to £24 per order apply, which may impact your future access to credit. T&Cs apply.
Klarna's Pay in 3 / Pay in 30 days are unregulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Late fees may apply.
Buy now, pay later interest free instalments.
No hidden fees. This is a credit product. 18+.
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