Seasonic
Seasonic Vertex PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready
Bottom line: The Seasonic Vertex PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready ($269.99 on Amazon as of 2026-10-06): Native 12V-2x6 connector, ATX 3.1/PCIe 5.1 ready out of the box; main trade-off: hybrid fan mode means the 135 mm fan idles silent, then spins up audibly.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Native 12V-2x6 connector, ATX 3.1/PCIe 5.1 ready out of the box
- ✓ 1000W handles an RTX 5090 or RX 9000 build without an adapter
- ✓ 12-year warranty, far past the 5-7 year class norm
- ✓ Cybenetics Platinum A rating covers efficiency and noise
- ✓ 100% Japanese capacitors across the board
Cons
- ✗ Hybrid fan mode means the 135 mm fan idles silent, then spins up audibly
- ✗ 1000W is overkill for mid-range GPUs under 300W
- ✗ Fully modular cable set adds bulk in small-form-factor cases
- ✗ Cybenetics A noise rating is not the quietest A+ tier
SpecPicks Verdict
SpecPicks scored Seasonic Vertex PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Seasonic's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- ATX 3.1 / PCIE 5.1 ready. Native 12V-2x6 connector
- 80 PLUS and Cybenetics Platinum A certified
- NVIDIA RTX 5090 AMD RX 9000 ready
- 100% Japanese capacitors
- Hybrid fan control with 135 mm FDB fan
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 1000 watts |
| Model Name | Vertex PX-1000 ATX 3.1 |
| Form Factor | ATX |
| Model Number | Vertex PX-1000 ATX 3.1 |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1000 watts |
| Item Dimensions | 6.3 x 5.9 x 3.4 inches |
| Mfr Part Number | Vertex PX-1000 ATX 3.1 |
| Number of Items | 1 |
| Compatible Devices | Personal Computer |
| Power Supply Design | Full Modular |
| Warranty Description | 10 years |
| Maximum Input Voltage | 132 volts_of_alternating_current |
| Minimum Input Voltage | 90 volts_of_alternating_current |
| Item dimensions L x W x H | 6.3 x 5.9 x 3.4 inches |
| System Bus Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Full listing title | Seasonic Vertex PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready | 80 Plus & Cybenetics Platinum A Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Japanese Capacitors 12 Years Warranty |
Ready to buy?
Seasonic Vertex PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready | 80 Plus & Cybenetics Platinum A Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Japanese Capacitors 12 Years Warranty is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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