Seasonic PRIME TX ATX 3.1 Spec and Price in the United States
Seasonic's flagship: the PRIME TX ATX 3.1 is 80 PLUS Titanium certified at 94% efficiency under half load, and Seasonic backs it for twelve years, the same term the rest of the PRIME range carries. Both current units, 1300W and 1600W, carry native 12V-2x6 connectors for PCIe 5.1 graphics cards and a 135mm fluid-dynamic-bearing fan under digital hybrid control that stays stopped at low load. At 210mm deep it is a large unit, so check clearance before buying it for anything but a full tower.
Prices exclude sales tax.
The last tracked price for the 1600W Seasonic PRIME TX ATX 3.1 in the United States was $559.99 at Amazon.com, captured 2026-10-12. Across one tracked merchant and 667 days of recorded prices, the 90-day median for the 1600W Seasonic PRIME TX ATX 3.1 is $654.00 and the lowest recorded price is $505.34. 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.
- 1600W
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 Titanium
- Form factor
- ATX
- Modular
- Fully modular
- ATX version
- 3.1
- Fan size
- 135 mm
- Length
- 210 mm
- Zero-RPM mode
- Yes
- Warranty
- 12 years
Wattages
| Configuration | Part number | Current best price |
|---|---|---|
| 1300W | — | — |
| 1600W | — | $559.99 Price too old to confirm |
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
- Reviewers describe the internal design as very high quality, built from proven components and finished to flagship standards.
- The 135mm fan stays stopped for long stretches even at several hundred watts of load, so it runs quietly in ordinary use.
Commonly criticised
- At 210mm deep and around 3kg it is a large, heavy unit that will not suit every case.
- It is positioned at a premium price for its capacity.
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.