Seasonic
VERTEX GX-1200 - 1200W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible
*Price sourced from Amazon.com. Last updated 2026-05-21. Price and availability subject to change.
*High Efficiency, 80 PLUS® Gold 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 *Highly Reliable Japanese 105 °C Aluminum Electrolytic Capacitors *Tight Voltage Regulation (12 V, 5 V and 3.3 V) [± 3 %] *Ample +12 V Output *DC to DC Converter Design *Cable-free Connection Design *Gold-Plated High Current Terminals (MB, CPU and PCIe) *10 Years Warranty
SpecPicks Verdict
SpecPicks classifies Seasonic VERTEX GX-1200 - 1200W - 80+ Gold - ATX 3.0 & PCIe 5.0… as a solid pick with broad community endorsement in the power supplies category, based on 181 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Seasonic's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.2★ customer rating
- ✓ Fully compatible with ATX 3.0 and PCIe 5.0 standards
- ✓ Backed by Seasonic's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Fully compatible with ATX 3.0 and PCIe 5.0 standards
- Full modularity for the best cable management options
- Added 12VHPWR cable to comply with the new graphic cards
- 135mm Fluid Dynamic Bearing (FDB) fan for quiet operation
- Seasonic Hybrid Silent Fan Control for optimal cooling
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 1200 watts |
| Model Name | Vertex GX-1200 |
| Unit Count | 1.0 Count |
| Form Factor | ATX |
| Model Number | VERTEX GX-1200 |
| Connector Type | atx,pcie |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1200 |
| Item Dimensions | 7.3 x 13.6 x 4.5 inches |
| Mfr Part Number | VERTEX GX-1200 |
| Compatible Devices | Personal Computer |
| Power Supply Design | Full Modular |
Ready to buy?
Seasonic VERTEX GX-1200 - 1200W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-21. Price and availability subject to change.
Related Power Supplies
