£189.00
£199.00
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Corsair RM850x – 850W 80 PLUS Gold Fully Modular ATX Power Supply – Black
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Condition: New
- New Out of stock
- Used – Like New Out of stock
Condition details
Know what to expect
Each condition grade explains the item’s expected cosmetic appearance. Used items are checked and tested before dispatch.
Tested
Checked before dispatch
Warranty
12-month cover included
Clear grading
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.
In Stock – Ready to Dispatch
Overview
The Corsair RM850x is a premium 850W ATX power supply designed for high-performance gaming PCs, workstations and enthusiast builds. With 80 PLUS Gold efficiency, fully modular cabling and ultra-quiet operation, it provides clean, stable power while maintaining exceptional reliability. Ideal for modern GPUs and powerful multi-core processors.
Key Features
- 850W high-performance power output for demanding gaming and productivity systems
- 80 PLUS Gold certification for excellent energy efficiency
- Fully modular cables for cleaner builds and improved airflow
- Zero RPM fan mode for silent low-load operation
- Durable 105°C-rated Japanese capacitors for long-term reliability
- Low-noise cooling with a high-quality 135mm fan
- ATX form factor compatible with most mid and full-tower cases
- Black finish with premium Corsair build quality
- Supports modern GPUs including PCIe 4.0/5.0 power requirements (via adapters or included cables depending on revision)
- OVP, UVP, SCP, OCP and OTP protection for system safety
Benefits
The RM850x is an ideal choice for users building powerful PCs who want long-lasting stability, low noise and efficient performance. Fully modular design simplifies cable management, while Gold efficiency helps reduce energy use and heat output. It’s built to support high-end GPUs and future upgrades reliably.
Specifications
| Specification | Details |
|---|---|
| Model | Corsair RM850x |
| EAN / Barcode | [Ean] |
| Power Output | 850W |
| Efficiency Rating | 80 PLUS Gold |
| Cabling | Fully modular |
| Fan | 135mm low-noise (Zero RPM mode) |
| Capacitors | 105°C Japanese capacitors |
| Form Factor | ATX |
| Colour | Black |
| Protection | OVP, UVP, SCP, OCP, OTP |
| Performance Type | Gaming / workstation / high-performance PC builds |
Perfect for PC builders, gamers, workstation users and enthusiasts needing stable, efficient and quiet power delivery for high-end components and future upgrades.
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FREE Next Day Delivery on orders over £49.99.
Order before 4:00 p.m. Monday–Thursday for delivery the next working day.
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FREE Standard Delivery on orders over £19.99.
Delivery within 1–2 working days. Orders under £19.99 are £1.99, also delivered within 1–2 working days.
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Express / Saturday Delivery – £4.99.
Order before 4:00 p.m. on Friday and select Express Delivery for Saturday delivery.
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Weekend orders.
Orders placed on Saturday or Sunday are processed on Monday. Next Day Delivery does not include weekends. Working days are Monday–Friday, excluding public holidays.
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Delivery areas.
Next Day Delivery is available to mainland UK, excluding AB, IV, KW, PA, PH, HS, KA, ZE, PO30–PO41, IM, JE, GY, BT and TR21–TR25. Delivery to these areas may take 3–5 working days.
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What each condition means.
- New
- Brand-new, unused, unopened and never activated, in its original packaging.
- Like New
- Looks fresh out of the box with no signs of wear. May have been opened or used very minimally; all original accessories included.
- Very Good
- Minimal wear from general use and 100% operational. May have minor cosmetic marks or be missing non-essential accessories.
- Good
- Fully operational with noticeable wear, such as scratches or dents. May be missing non-essential accessories.
- Fair
- Fairly worn, with scratches, dents or worn corners, but works perfectly. May be missing non-essential accessories.
| EAN/UPC: |
840006604808 |
|---|
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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+.
What's in the box
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Your item
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Essential accessories
All required accessories included.
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12 months warranty
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