# Corsair RM850e (2025) 850W Fully Modular — White

Source: https://www.ranked10.co.uk/tech/best-pc-power-supplies/corsair-rm850e-white
Ranked #7 in "Best PC Power Supply 2026: 10 Ranked, and the Specs That Don't Add Up": https://www.ranked10.co.uk/tech/best-pc-power-supplies

- Price: £94.99 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.7 from 50 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0F3DRP6B3?tag=ranked10-21

The Corsair RM850e (2025) is an 850 Watt fully modular ATX 3.1 power supply, listed here in white at £94.99 with 4.7 out of 5 from 50 ratings. It takes the number 7 slot in this guide. Unlike several listings in this category, the numbers on this one do not fight each other: an output wattage of 850 Watts appears twice in the spec table with the same figure, the single 120mm rifle bearing fan described in the bullet text is matched by a spec table listing one fan, and the stated input range of 100 to 230 Volts (AC) does cover the roughly 230V UK mains.

The finding in this listing is a price finding. Corsair gives the white version at £94.99 and the black version at £89.00, then gives both the same 15 x 14 x 8.6 centimetre dimensions and the same 1.53 kg weight — a £5.99 difference that buys the finish and nothing the spec table can distinguish. Everything on this page is taken from the Amazon listing; we have not tested this unit ourselves.

## Specification

| Field | Value |
|---|---|
| Price | £94.99 (the black version is listed at £89.00) |
| Rating | 4.7 out of 5 from 50 ratings |
| Rating spread | 87 five-star, 5 four-star, 4 three-star, 3 two-star, 1 one-star (as listed) |
| Output wattage | 850 Watts (as listed, and repeated as 850 watts elsewhere in the same table) |
| Dimensions | 15 x 14 x 8.6 centimetres (the black version carries the same figure) |
| Weight | 1.53 kg (the black version carries the same figure) |
| Input voltage | 100 to 230 Volts (AC) |
| Fan | 120mm rifle bearing, 1 fan |

## Questions people ask

**Is the white Corsair RM850e different from the black one?**

Corsair lists both at the same 15 x 14 x 8.6 cm and the same 1.53 kg, and prices the white version at £94.99 against £89.00 for the black. The finish is the difference the listings show.

**How much power does the Corsair RM850e supply?**

The spec table gives an output wattage of 850 Watts.

**Will the Corsair RM850e run from a UK wall socket?**

The listing states a minimum input voltage of 100 Volts (AC) and a maximum of 230 Volts (AC), which covers the roughly 230V UK mains.

**What efficiency does the Corsair RM850e carry?**

Corsair quotes Cybenetics Gold efficiency. The claim is Cybenetics Gold rather than 80 Plus Gold.

**Does the Corsair RM850e include the cable for a modern graphics card?**

Yes — the product name lists a 12V-2x6 cable, and the listing states ATX 3.1 and PCIe 5.1 compliance with support for 2x transient power excursions from the GPU.

**How does the Corsair RM850e keep noise down?**

Corsair states a 120mm rifle bearing fan with a specially calculated fan curve that keeps fan noise down even at full load.