Seasonic PRIME PX-1000 Power Supply

Seasonic PRIME PX-1000

Brand
Seasonic
Model
PRIME PX-1000

Seasonic PRIME PX-1000 (2019) is a 1000W 80+ Platinum, fully modular ATX PSU, now discontinued; ideal for high-end GPU builds and overclocking headroom.

TierFlagship?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
Released2019
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Wattage1000 W
Efficiency80+ Platinum
Form factorATX
ModularYes
GixCore Editorial

Product overview

Seasonic introduced the PRIME PX-1000 in 2019 as part of its third‑generation PRIME family under the OneSeasonic refresh (PRIME PX series). It’s an ATX 12V, 80+ Platinum, fully modular 1000 W unit backed by a 12‑year warranty.

Positioned as a flagship PSU, it exists to deliver clean, reliable power with ample headroom for demanding desktops. It’s well‑suited to high‑end GPU builds and users planning overclocking or many drives; the 170 mm ATX length fits most mid/full‑towers, and the hybrid fanless mode helps keep noise low. Note that this 1000 W PX variant is pre‑ATX 3.0 and lacks a native 12VHPWR connector. The PRIME PX line is now listed by Seasonic as discontinued.

LifecycleDiscontinued
Best for
  • high-end GPU builds
  • headroom/overclocking

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the power supplies catalog
Current modelCatalog models
Wattage1000 W
Higher than 85% of power supplies
Wattage
1000 W
Efficiency
80+ Platinum
Modular
Yes
Eco Mode
Yes
Form factor
ATX
Pairing fit

Compatible Motherboards

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options
Pairing fit

Compatible Cases

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options