Intel Arc B580 power connector: what does it need?
The Intel Arc B580 needs 1× PCIe 8-pin from the power supply. At about 190 W board power, here is what to know before you plug it in.
Recommendations are planning estimates, not electrical or purchasing advice. The hardware figures behind them are vendor-published; your exact board-partner model and build can still differ.
Power connector
1× PCIe 8-pin
Reference power input.
GPU board power
190 W
Vendor TGP/TBP — a conservative ceiling, not typical gaming draw.
PSU minimum (typical build)
550 W
Assumes a 125 W-class CPU + standard accessories.
PSU comfortable (typical build)
550 W
Standard headroom for spikes and future room.
Board-partner note
Intel Limited Edition uses a single 8-pin; some board-partner OC cards (e.g. ASRock Challenger OC) raise power and recommend 650 W PSUs.
ATX 3.x advice
Any competent modern power supply with the right cable handles this card. ATX 3.x is optional at this power class.
Safety notes
- Never mix modular cables between different PSU brands or models. The PSU-side pinout is not standardized — a mismatched cable can destroy hardware.
- Do not exceed a cable's rated load with splitters or adapters, and replace any cable with damaged or discolored connectors.
- Before buying, confirm the connector layout and PSU guidance on the official pages of both your exact card model and your PSU — board partners change designs between variants.
Sizing a supply for a full build? See the Intel Arc B580 PSU recommendation → or open the full PSU Calculator →
How to check this figure
Intel publishes this on the card's ARK specification page, in the "Intel Reference Card Attributes" block, under the label "Minimum Power Supply Unit" — not "Recommended Power Supply". Board power on the same page is labelled "TBP".
Source: Intel official specification; multi-agent web verification 2026-07-15. Last updated: 2026-07-22.
Frequently asked questions
What power connector does the Intel Arc B580 use?
The Intel Arc B580 uses 1× PCIe 8-pin. Always confirm the exact layout on your specific board-partner model.
Do I need an ATX 3.1 power supply for the Intel Arc B580?
Any competent modern PSU with the correct cable handles the Intel Arc B580. ATX 3.x is optional at this power class.
What size PSU pairs with the Intel Arc B580?
For a typical companion system we estimate a 550 W minimum and 550 W for comfort. Use the PSU Calculator for your exact CPU and parts.