Power Supply
Seasonic VERTEX GX-850 850W 80+ Gold
● In Stock
Price on enquiry · Message us for today’s quote
The graphics card power cable is in the box. That sounds like a small thing right up until you are halfway through a build at eleven at night holding a card that wants a connector you do not have. Everything needed to power a current card ships with the unit — no adapter to source separately, no second order, no waiting. Around that is Seasonic build quality at 850W of Gold-rated output, fully modular, sized for the draw most gaming machines actually pull.
Key Specs
Output — 850W continuous
Efficiency — 80 PLUS Gold
Cabling — Fully modular
Standard — ATX 3.0
GPU Connector — 12VHPWR cable included
Best for — A 12VHPWR cable in the box
Warranty — Full manufacturer warranty
What It Pairs With
850W suits a Ryzen 7 or Core Ultra 7 with a graphics card through the middle and upper part of the range. Two things are worth matching deliberately: a case with enough depth behind the tray for the cables to turn, since the GPU cable in particular does not like a tight bend at the connector, and a card whose socket matches the cable supplied, which we will check from your model. Fully modular means the cables you do not need stay in the box.
Who This Isn’t For
This unit is built to the ATX 3.0 specification rather than 3.1. It runs a current card perfectly well, but a machine planned around the very top of the graphics range is worth specifying against the newer standard, and we will tell you when that applies to your parts list rather than leaving you to find out. The 850W figure is the other limit: a flagship card next to a processor you intend to push wants more margin than this leaves, and running a supply close to its ceiling is a false economy.
Common Questions
What is the difference between ATX 3.0 and 3.1?
3.1 tightens the requirements for how a unit rides out very short bursts where a card pulls well above its rated figure. A 3.0 unit runs current hardware fine; the distinction matters most at the very top of the range.
Will the included cable fit my card?
It is a 12VHPWR cable, which is what current high-power cards use. Send us the exact card model and we will confirm the socket matches before you order, so there is no surprise when the box is open.
Do I still need an adapter for anything?
Not for the graphics card. The motherboard and processor cables are in the box as well, so a standard build has everything it needs from this one package.
Check that your card’s rated requirement plus a margin for transient spikes sits comfortably under this unit’s output, that the included connector is the one your card expects, and that the housing fits the length your case allows. Tell us your GPU model and case in the enquiry and we will sanity-check all three.