Corsair CX650 Spec and Price in the United Kingdom
The CX is the plain end of Corsair's range and makes no secret of it: fixed cables, an ATX12V v2.31 platform, and 80 PLUS Bronze efficiency of up to 88%. What it buys you is size — a 125mm casing that drops into cases a longer unit fights — and a thermally controlled 120mm fan that only speeds up under heavy load. Three SATA connectors and two PCIe 6+2 plugs make it a single-graphics-card supply rather than a workstation one. Corsair covers the 550W, 650W and 750W for five years.
Prices include VAT.
The last tracked price for the 550W Corsair CX650 in the United Kingdom was £39.98 at Amazon.co.uk, captured 2026-10-12. Across one tracked merchant and 717 days of recorded prices, the 90-day median for the 550W Corsair CX650 is £62.45 and the lowest recorded price is £34.90. This site began capturing prices on July 30, 2026; for Amazon listings, prices dated earlier come from Keepa's price history.
Captured periodically and may have changed.
- 550W
- 650W
Each point is one day's recorded price, not a list price. Points dated before July 30, 2026, when this site began capturing prices, come from Keepa's Amazon price history. How we track prices
Specifications
- Wattage
- Efficiency
- 80 Plus Bronze
- Form factor
- ATX
- Modular
- Non-modular
- ATX version
- 2.31
- Fan size
- 120 mm
- Length
- 125 mm
- PCIe 8-pin
- 2
- SATA connectors
- 3
- Warranty
- 5 years
Wattages
| Configuration | Part number | Current best price |
|---|---|---|
| 550W | CP-9020277-NA | £39.98 Price too old to confirm |
| 650W | CP-9020278-NA | £44.99 Price too old to confirm |
| 750W | CP-9020279-NA | — |
What owners and reviewers say
Summarised from 1 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices
Commonly praised
- Reviewers found it affordable while still delivering full power at 41 C, with tight load regulation and low vampire power.
- Its 5VSB rail is highly efficient and it has long cables.
Commonly criticised
- Hold-up time is very low and the +12V transient response could be better, with fairly high 230V inrush current.
- It is non-modular, has only one EPS connector, and its fan profile could be less aggressive.
Sources behind this summary
Guides for this category
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.
- https://www.corsair.com/us/en/p/psu/cp-9020278-na/cx-series-cx650-650-watt-80-plus-bronze-atx-power-supply-cp-9020278-na
- https://www.corsair.com/us/en/p/psu/cp-9020277-na/cx-series-cx550-550-watt-80-plus-bronze-atx-power-supply-cp-9020277-na
- https://www.corsair.com/us/en/p/psu/cp-9020279-na/cx-series-cx750-750-watt-80-plus-bronze-atx-power-supply-cp-9020279-na