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⚡ Power your ambition with Seasonic’s Vertex GX-1200 — where future-ready meets flawless.
The Seasonic VERTEX GX-1200 is a 1200W, 80 PLUS Gold certified power supply designed for high-performance PCs. It supports the latest ATX 3.0 and PCIe 5.1 standards, featuring a fully modular cabling system including a 12VHPWR cable for new GPUs. Equipped with a 135mm fluid dynamic bearing fan and hybrid silent fan control, it delivers quiet and efficient cooling. Built with premium Japanese capacitors and backed by a 10-year warranty, it offers stable voltage regulation and long-term reliability for demanding professional and gaming setups.
| ASIN | B0BQRFC497 |
| Best Sellers Rank | #61 in Computer Power Supplies |
| Brand | Seasonic |
| Compatible Devices | Personal Computer |
| Connector Type | atx,pcie |
| Connector Type Used on Cable | atx,pcie |
| Cooling Method | Air |
| Customer Reviews | 4.3 out of 5 stars 128 Reviews |
| Form Factor | ATX |
| Global Trade Identification Number | 04711173877721 |
| Item Dimensions | 7.3 x 13.6 x 4.5 inches |
| Item Highlight | 80 Plus & Cybenetics Gold Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Premium Japanese Capacitors 12 Years Warranty |
| Item Weight | 3.3 kg |
| Manufacturer | Seasonic |
| Maximum Input Voltage | 264 volts_of_alternating_current |
| Mfr Part Number | VERTEX GX-1200 |
| Minimum Input Voltage | 110 volts_of_alternating_current |
| Model Name | Vertex GX-1200 |
| Model Number | VERTEX GX-1200 |
| Number of Fans | 1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Wattage | 1200 |
| Power Supply Design | Full Modular |
| System Bus Connector Type | 16 Pin |
| UPC | 827676014410 |
| Unit Count | 1 Count |
| Warranty Description | 10 years |
| Wattage | 1200 watts |
K**H
Smooth power. Smooth draw on initial powerup. no dimming room lights.
good, quiet, smooth power. i have had 0 issues. sufficient cables for everything included. relatively short wall to PS power cable ~5'. use a different, properly rated one if needed.
A**X
Works great for my RTX 5090.
This has been a great stable power supply. Runs my RTX 5090 perfectly. This is the 2nd time I've went with Seasonic and would now highly recommend them for their power supply units.
A**H
Exactly what you get and well worth it!
Runs great. Fantastic warranty. Comes with all you need just can’t fit in place of a tiny PS. It’s full size. Great price especially with a Longer than average warranty. If you have a newer case ( not like smaller Dell or such it takes almost no time to install. Even comes with the new 12pin connector for the latest and greatest GPU. As far as heat, far less of a problem than cheaper power supply’s. I run Server with 7 drives and dual Xeon processors. Heat has not been a problem for me. Runs warm but considering it’s 1200watts, it’s average on the cooler side.
C**A
Very good power supply
Very good, I love how it comes packaged, the quality of the cables is very good, everything works well, I bought it a few days ago, 0 errors, the support is very good, they answer questions immediately, even if you buy the power supply, and within 90 days from the day you buy it, with the receipt of the purchase, Seasonic sent you the new 3.1 cable for the new 5 thousand series GPUs from Nvidia.
M**V
DEAD after less than 5 months.
Worked great for not even five months. 7800X3D, 4090, Asrock PG650 lightning mobo. Worked great, then one day computer wouldn't turn on at all. Removed power supply , plugged in the " Test " plug, yeah, sure enough that worked. plug it back in.... nope. wouldn't turn on. swapped over to my 11 year old Corsair TX850W (non modular, oh well) works like a champ even in retirement. Looks like i'm getting another corsair.
A**E
Good product
Noise level, power, compatibility
Y**U
Good power
Good power. Suitable for 5090.
K**A
Heavy like you want it.
Solid power supply for my homelab. Plenty of headway for more powerful hardware and the provided connectors seem very high quality.
T**R
Incredible
The best of the best !
G**.
Blew the fuse. PSU not working.
The first time I bought a premium power supply from another company and unfortunately I had bad luck. After a thorough checked connection l switching on and PSU blew out the fuse in my main switch. I connected the previous PSU Corsair and fortunately the PC works. Unfortunately, I will not buy a power supply from this company for a long time. I won't take risk again. Thanks fully protection worked. I ordered MSI MEG now.
C**N
Puissante alimentation d'excellente qualité
mis dans une serveur avec un threadripper 3960x et 4 gpu (3080ti, 2080ti, 3060 et A2000) et tout tourne parfaitement.
M**E
Good so far
Seems to work as expected. Not used it for more than 2 weeks though. Easy to install, but you might have to use the supplied braided cables, as the connectors are tighter on the PSU than regular cables. The included cables are of good quality and braided.
A**R
Don't bother with this PSU particularly with 240v
Seasonic has a good name, which is why I was surprised that within 4 months it died, not only did it die, but if you plug it into a wall socket, even without connecting anything, it will trip the breakers, implying it has a leakage that could be dangerous. I deliberately picked the item on Amazon that had the image of an Australian plug due to the missing localisation information, this has since changed and the product itself came from Amazon's German branch. On inspection the 240v rated power supply has had some internal glue melt and push against other components casuing a short (thankfully not to the chassis)
Trustpilot
3 weeks ago
3 weeks ago