---
product_id: 567277961
title: "Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready"
brand: "seasonic"
price: "$757.65"
currency: USD
in_stock: true
reviews_count: 13
category: "Seasonic"
url: https://www.desertcart.us/products/567277961-seasonic-vertex-px-1200-1200w-power-supply-atx-3-1
store_origin: US
region: United States of America
---

# 1200W peak power output 80 PLUS Platinum efficiency ATX 3.1 & PCIe 5.1 ready cables Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready

**Brand:** seasonic
**Price:** $757.65
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your future with platinum-grade precision!

## Quick Answers

- **What is this?** Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready by seasonic
- **How much does it cost?** $757.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/567277961-seasonic-vertex-px-1200-1200w-power-supply-atx-3-1)

## Best For

- seasonic enthusiasts

## Why This Product

- Trusted seasonic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular Mastery:** Fully modular cabling design for clean builds and effortless upgrades
- • **Platinum Efficiency:** 80 PLUS Platinum certification ensures ultra-low energy waste and cooler operation
- • **Whisper-Quiet Cooling:** 135mm Fluid Dynamic Bearing fan with Hybrid Silent Control keeps noise minimal under load
- • **Powerhouse Performance:** 1200W delivers stable, high-capacity power for next-gen GPUs and CPUs
- • **Future-Proof Connectivity:** Supports ATX 3.1 & PCIe 5.1 with 16-pin Gen 5 cable for cutting-edge hardware

## Overview

The Seasonic Vertex PX-1200 is a 1200W fully modular power supply engineered for high-end PCs, featuring ATX 3.1 and PCIe 5.1 compatibility with a 16-pin Gen 5 cable. It boasts 80 PLUS Platinum efficiency, a quiet 135mm fluid dynamic bearing fan with hybrid silent control, and a 10-year warranty, making it a reliable, future-ready choice for demanding professional and gaming setups.

## Description

Buy Seasonic Vertex PX-1200 1200W 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: Internal Power Supplies - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Power Supply - This is a great power supply for 1200W but it was a steep price. I want with another brand and after about two weeks that power supply went out so I decided to go with this brand since it been around for awhile and is a manufacturer of power supplies for other companies also. It still going strong over two or three months without any issues. I bought two of these, 1 for my son and the other for my computer and they both worked well. I would recommend buying these if your machines need 1200W or less power. This also comes with the 600W power supply cable and is the new standard for the Nvidia 40 cards. The only thing I would do differently is buy the gold version of this as there is that big of a difference between gold and platinum efficiency ratings.
Review: Does what it says - Works like a charm

## Features

- High Efficiency, 80 PLUS Platinum Certified
- ATX 3.0 and 16-Pin Gen 5 PCIe Cable (12VHPWR)
- Fully Modular Cabling Design
- 135 mm Fluid Dynamic Bearing (FDB) Fan
- Seasonic Hybrid Silent Fan Control

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C571DW23 |
| Best Sellers Rank | #66 in Computer Power Supplies |
| Brand | Seasonic |
| Compatible Devices | Personal Computer |
| Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Cooling Method | Fan |
| Customer Reviews | 4.2 out of 5 stars 70 Reviews |
| Fan Size | 14 centimeters |
| Form Factor | ATX |
| Global Trade Identification Number | 04711173877769 |
| Item Dimensions | 6.3 x 5.9 x 3.4 inches |
| Item Weight | 2.7 kg |
| Manufacturer | Seasonic |
| Maximum Input Voltage | 132 volts_of_alternating_current |
| Mfr Part Number | VERTEX PX-1200 |
| Minimum Input Voltage | 100 volts_of_alternating_current |
| Model Name | VERTEX PX-1200 |
| Model Number | VERTEX PX-1200 |
| Number of Fans | 1 |
| Number of Items | 1 |
| Output Wattage | 1200 |
| Power Supply Design | Full Modular |
| System Bus Connector Type | ATX |
| Unit Count | 1 Count |
| Warranty Description | 10 years |
| Wattage | 1200 |

## Product Details

- **Brand:** Seasonic
- **Compatible Devices:** Personal Computer
- **Connector Type:** ATX
- **Cooling Method:** Fan
- **Form Factor:** ATX
- **Item Weight:** 2.7 kg
- **Item dimensions L x W x H:** 6.3 x 5.9 x 3.4 inches
- **Model Name:** VERTEX PX-1200
- **Output Wattage:** 1200
- **Wattage:** 1200

## Images

![Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready - Image 1](https://m.media-amazon.com/images/I/81jMOzwZ08L.jpg)
![Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready - Image 2](https://m.media-amazon.com/images/I/71MQbovS+RL.jpg)
![Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready - Image 3](https://m.media-amazon.com/images/I/61bUdgt5BML.jpg)
![Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready - Image 4](https://m.media-amazon.com/images/I/81FGKFXZ0uL.jpg)
![Seasonic Vertex PX-1200 1200W Power Supply ATX 3.1 & PCIe 5.1 Ready - Image 5](https://m.media-amazon.com/images/I/613xWo8eyzL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Power Supply
*by S***0 on April 3, 2024*

This is a great power supply for 1200W but it was a steep price. I want with another brand and after about two weeks that power supply went out so I decided to go with this brand since it been around for awhile and is a manufacturer of power supplies for other companies also. It still going strong over two or three months without any issues. I bought two of these, 1 for my son and the other for my computer and they both worked well. I would recommend buying these if your machines need 1200W or less power. This also comes with the 600W power supply cable and is the new standard for the Nvidia 40 cards. The only thing I would do differently is buy the gold version of this as there is that big of a difference between gold and platinum efficiency ratings.

### ⭐⭐⭐⭐⭐ Does what it says
*by T***A on May 21, 2026*

Works like a charm

### ⭐⭐⭐⭐⭐ Great High Quality ATX 3.1 PSU (2026 Update)
*by J***D on April 22, 2024*

UPDATE: When I originally ordered this PSU it was ATX 3.0 and my unit had some issues with mild coil whine even after a replacement. I switched to an NZXT C1500 and sold the original PSU to a friend. I had originally given the PSU a 4-star rating. I just changed my PC case to downsize my build foot print as such while the NZXT C1500 fit it was the maximum possible PSU length and I couldn’t reinstall the cable/SSD cover and so I decided to reordered this PSU. I was pleasantly surprised to see that its been refreshed and it’s now an ATX 3.1 with a 12VHPWR 2x6 it’s got a really distinct blue head on the connector now which will easily tell you if it’s fully seated hopefully mitigating any issues or potential fire hazards. Another new surprise is that now Seasonic includes cable combs for your PSU cables. I always thought this was a strange omission since they made such a big deal about the individually sleeved cables. This makes the cables look much cleaner in my build and overall elevates the PSU compared to before. The last and nicest surprise for me is that at idle or under load my PSU is nearly slient. I can’t hear any coil whine and it’s only audible via the fan when my ear is directly next to the case where the PSU is. This is excellent and now the only coil whine I hear in my build is rather obnoxiously from my 4090 FE. Overall this is great revision to an already excellent PSU. My only real gripe is the price. There are plenty of other PSUs in this spec at lower price points. That said Seasonic is well known for their reliability and honoring their lengthy 12 year warranties without fail. New rating for the ATX 3.1 variant is 5-stars.

## Frequently Bought Together

- Seasonic Vertex PX-1200-1200W - 80+ Platinum - ATX 3.0 & PCIe 5.0 Ready - Full-Modular - ATX Form Factor - Low Noise - 12 Year Warranty - Nvidia RTX 30/40 Super & AMD GPU Compatible
- Samsung 990 PRO SSD 4TB PCIe 4.0 M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up to 7,450 MB/s for High End Computing, Gaming, and Heavy Duty Workstations, MZ-V9P4T0B/AM
- AMD RYZEN 7 9800X3D 8-Core, 16-Thread Desktop Processor

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-26*