Seasonic Vertex PX-1000
Expert rating8.7 / 10
- Wattage:
- 1000 W
- 80 PLUS Rating:
- Platinum
- Modularity:
- Fully Modular
- ATX Standard:
- ATX 3.1
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Manufacturer: Seasonic Last updated: 2026-09-12
Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0) Review
If you're searching for the Seasonic Vertex PX-1000, or just looking for a solid 1000W 80 PLUS Platinum PSU in a ATX form factor, here's the full rundown on specs, price, and how it stacks up.
Short answer: the Vertex PX-1000 is a fully modular 1000W unit built to the ATX 3.0 spec, and we'd recommend it if you want Platinum-tier efficiency at this wattage without chasing a flagship price tag.
Efficiency and Build Quality
The Vertex PX-1000 carries an 80 PLUS Platinum certification and Cybenetics Platinum efficiency / A noise, built on a Seasonic platform. Its 135mm FDB keeps noise down, with Zero-RPM fan-stop under light loads.
Connectors and Cabling
You get 1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6 (600W), 4x PCIe 6+2-pin, 8x SATA, 3x Molex. Cable lengths run 24-pin 610mm, EPS 650mm, 12V-2x6 610mm, PCIe 650mm, SATA 750mm, and the cables are standard black ribbon/flat, not sleeved. It's rated for a 17ms hold-up time and backed by OCP, OVP, OPP, SCP, OTP, UVP protection circuitry.
Comparison to Alternatives
Compared to the Seasonic Vertex GX-850, the Vertex PX-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 Seasonic Prime 1000 Platinum if you're weighing Platinum-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.
Specifications
Identity
| Brand | Seasonic |
|---|---|
| Model Number | Vertex PX-1000 |
Output and rails
| +12V Rail Amperage | 83 A |
|---|---|
| Single +12V Rail | Yes |
Standards and compliance
| PCIe CEM Standard | PCIe 5.1 |
|---|---|
| Hold-Up Time | 17 ms |
Connector inventory
| EPS 8-pin Connectors | 2 |
|---|---|
| Molex Connectors | 3 |
Form factor and fit
| Length | 160 mm |
|---|---|
| Colour | Black |
Build quality
| MTBF | 100000 hours |
|---|
Cables
| Modularity | Fully Modular |
|---|
Monitoring, protection and price
| Protections | OCP, OVP, OPP, SCP, OTP, UVP |
|---|---|
| Price | 189.99 USD |
| Warranty | 12 years |
| Wattage | 1000 W |
|---|---|
| 80 PLUS Rating | Platinum |
| ATX Standard | ATX 3.1 |
| Form Factor | ATX |
| Cybenetics Efficiency | Platinum |
| Cybenetics Noise | A |
| 12V-2x6 Connectors | 1 |
| Zero-RPM Mode | Yes |
| Sleeved Cables | No |
| PCIe 8-pin Connectors | 3 |
| Connector Count | 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 3x PCIe 6+2-pin, 3x 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 750mm |
| Source URL | https://seasonic.com/vertex-px/ |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.7 / 10
Vertex PX steps up from the Gold-rated Vertex GX line to Platinum efficiency at 1000W, giving Seasonic a mid-tier option between the mainstream Focus series and the Prime flagships.
Best for
- High-end single-GPU gaming builds (RTX 4080/4090-class cards)
- Builders who want Platinum-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
FAQs
What are the key specifications of the Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)?
The Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0) is a power supply from Seasonic. Key specs: Wattage 1000 W, 80 PLUS Rating Platinum, Cybenetics Efficiency Platinum, Cybenetics Noise A, Modularity Fully Modular.
Will the Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0) work with my current setup?
The Seasonic Vertex PX-1000 (1000W/80+ Platinum/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 Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0) best suited to?
It suits high-end single-gpu gaming builds (rtx 4080/4090-class cards), builders who want platinum-tier efficiency with future gpu upgrade headroom, systems that benefit from a native 12v-2x6 cable.
What are the drawbacks of the Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)?
It is a poor 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.
Compare and read more
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- be quiet! Pure Power 12 550W (550W/80+ Gold/Semi-Modular/ATX 2.x/Mainstream Value Pick) vs Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)
- ASUS TUF Gaming 750W Bronze (750W/80+ Bronze/Semi-Modular/ATX 2.x/Mainstream Gaming Tier) vs Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)
- Antec Signature 1300 Platinum (1300W/80+ Platinum/ATX 3.0/Flagship Extreme Tier) vs Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)
- ASUS ROG Thor 1200W Platinum II (1200W/80+ Platinum/ATX 3.0/High-End/Multi-Gpu Tier) vs Seasonic Vertex PX-1000 (1000W/80+ Platinum/ATX/Fully Modular/ATX 3.0)