Seasonic

Seasonic Prime TX-1000

Expert rating9.2 / 10

Wattage:: 1000 W
80 PLUS Rating:: Titanium
Modularity:: Fully Modular
ATX Standard:: ATX 3.0

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Manufacturer: Seasonic Last updated: 2026-09-12

Seasonic Prime TX-1000 Review

If you're searching for the Seasonic Prime TX-1000, or just looking for a solid 1000W 80 PLUS Titanium PSU in a ATX form factor, here's the full rundown on specs, price, and how it stacks up.

Short answer: the Prime TX-1000 is a fully modular 1000W unit built to the ATX 3.0 spec, and we'd recommend it if you want Titanium-tier efficiency at this wattage without chasing a flagship price tag.

Efficiency and Build Quality

The Prime TX-1000 carries an 80 PLUS Titanium certification and Cybenetics Titanium efficiency / A++ noise, built on a Seasonic platform. Its 135mm FDB, Hybrid Silent Fan Control keeps noise down, with Zero-RPM fan-stop under light loads.

Connectors and Cabling

You get 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6 (600W), 6x PCIe 6+2-pin, 8x SATA, 4x Molex. Cable lengths run 24-pin 610mm, EPS 650mm, 12V-2x6 610mm, PCIe 650mm, SATA 900mm, and the cables are sleeved. It's rated for a 22ms hold-up time and backed by OCP, OVP, OPP, SCP, OTP, UVP protection circuitry.

Comparison to Alternatives

Compared to the Seasonic Prime TX-1600, the Prime TX-1000 lands in the same efficiency tier at a different capacity, so the choice mostly comes down to how much wattage headroom you actually need. It's also worth cross-shopping against the Corsair HX1000i if you're weighing Titanium-tier options in this wattage class; both land in a similar price bracket, so the deciding factor usually comes down to form factor, cable sleeving, and warranty length.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating9.2 / 10

The Prime TX-1000 trades the flagship TX-1600's extreme headroom for a more affordable 1000W Titanium unit that still ships with sleeved cables and Seasonic's 12-year warranty.

Best for

High-end single-GPU gaming builds (RTX 4080/4090-class cards)
Builders who want Titanium-tier efficiency with future GPU upgrade headroom
Systems that benefit from a native 12V-2x6 cable

Not for

Budget builds where a 550-650W unit would be sufficient
Extreme dual-GPU or workstation rigs needing 1200W+
Buyers who specifically need SFX/SFX-L sizing

Specifications

What these specs mean

Identity

Brand	Seasonic
Model Number	Prime TX-1000

Output and rails

+12V Rail Amperage	83 A
Single +12V Rail	Yes

Standards and compliance

Hold-Up Time	22 ms

Form factor and fit

Length	170 mm
Colour	Black

Build quality

MTBF	100000 hours

Cables

Modularity	Fully Modular

Monitoring, protection and price

Protections	OCP, OVP, OPP, SCP, OTP, UVP
Price	269.99 USD
Warranty	12 years

Wattage	1000 W
80 PLUS Rating	Titanium
ATX Standard	ATX 3.0
Form Factor	ATX
Cybenetics Efficiency	Titanium
Cybenetics Noise	A++
12V-2x6 Connectors	1
Zero-RPM Mode	Yes
Sleeved Cables	Yes
PCIe 8-pin Connectors	6
Connector Count	1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6 (600W), 6x PCIe 6+2-pin, 8x SATA, 4x Molex
Fan Size	135 mm
Fan Model / Bearing	Fluid Dynamic
OEM / Platform	Seasonic
Japanese Capacitors	Yes
Cable Lengths	24-pin 610mm, EPS 650mm, 12V-2x6 610mm, PCIe 650mm, SATA 900mm

FAQs

What are the key specifications of the Seasonic Prime TX-1000 (1000W/80+ Titanium/ATX/Fully Modular/ATX 3.0)?

Key specs for the Seasonic Prime TX-1000: Wattage 1000 W, Modularity Fully Modular, Fan Size 135 mm, Warranty 12 years, 80 PLUS Rating Titanium, Cybenetics Efficiency Titanium.

Will the Seasonic Prime TX-1000 (1000W/80+ Titanium/ATX/Fully Modular/ATX 3.0) work with my current setup?

The Seasonic Prime TX-1000 (1000W/80+ Titanium/ATX/Fully Modular/ATX 3.0) lists Wattage is 1000 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Seasonic Prime TX-1000 (1000W/80+ Titanium/ATX/Fully Modular/ATX 3.0) best suited to?

Best suited to: High-end single-GPU gaming builds (RTX 4080/4090-class cards); Builders who want Titanium-tier efficiency with future GPU upgrade headroom; Systems that benefit from a native 12V-2x6 cable.

What are the drawbacks of the Seasonic Prime TX-1000 (1000W/80+ Titanium/ATX/Fully Modular/ATX 3.0)?

Not the best fit for: Budget builds where a 550-650W unit would be sufficient; Extreme dual-GPU or workstation rigs needing 1200W+; Buyers who specifically need SFX/SFX-L sizing.