Seasonic VERTEX PX ATX 3.1 Spec and Price in the United Kingdom
VERTEX is Seasonic's ATX 3.1 line and PX is its platinum tier — 92% efficiency at half load, full modularity, a 135mm fluid-dynamic-bearing fan, and a 12V-2x6 cable in the box for PCIe 5.1 cards. At 160mm deep it is 50mm shorter than the 210mm PRIME PX and TX, which is the difference between fitting and not fitting under a mid-tower's shroud. Four wattages from 750W to 1200W, all covered by Seasonic's twelve-year warranty.
Captured periodically and may have changed.
Specifications
- Wattage
- Efficiency
- 80 Plus Platinum
- Form factor
- ATX
- Modular
- Fully modular
- ATX version
- 3.1
- Fan size
- 135 mm
- Length
- 160 mm
- Zero-RPM mode
- Yes
- Warranty
- 12 years
Wattages
| Configuration | Part number | Current best price |
|---|---|---|
| 750W | — | — |
| 850W | — | — |
| 1000W | — | £915.73 at Amazon.co.uk · captured 2026-09-15 |
| 1200W | — | — |
Guides for this category
What owners and reviewers say
Summarised from 1 source(s), reviewed September 14, 2026. A source is counted only where it names this model exactly. How we track prices
Commonly praised
- Independent testing measured Cybenetics Platinum efficiency and a Cybenetics A noise rating, which is low for a 1000W unit.
- It is fully modular, comes with a rich cable bundle, and carries a twelve-year warranty.
Commonly criticised
- The reviewer questioned why the line was not updated to the newer 12V-2x6 connector so it could meet ATX 3.1.
- It is expensive relative to other 1000W units on the market.
Sources behind this summary
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.