AMD Radeon RX 7900 GRE power connector: what does it need?
The AMD Radeon RX 7900 GRE needs 2× PCIe 8-pin from the power supply. At about 260 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
2× PCIe 8-pin
Reference power input.
GPU board power
260 W
Vendor TGP/TBP — a conservative ceiling, not typical gaming draw.
PSU minimum (typical build)
650 W
Assumes a 125 W-class CPU + standard accessories.
PSU comfortable (typical build)
650 W
Standard headroom for spikes and future room.
Board-partner note
AIB-only card in most regions; typical layout is 2x 8-pin.
ATX 3.x advice
A classic multi-8-pin quality PSU works for this card. An ATX 3.x unit is still a sensible buy for its transient-load headroom, but it is not required.
Safety notes
- Run a separate PSU cable to each 8-pin input on the card rather than one daisy-chained (pigtail) cable, keeping per-cable load conservative.
- 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 AMD Radeon RX 7900 GRE PSU recommendation → or open the full PSU Calculator →
How to check this figure
AMD's product page for this card publishes "Typical Board Power (Desktop) 260 W" and no PSU recommendation; the field is also blank in AMD's specification database, while the RX 7900 XTX in that same database carries 800 W. The GRE began as a China/OEM-limited part, which is the likely reason. The board power here is AMD's; there is no AMD PSU figure to quote.
Source: AMD official specification; multi-agent web verification 2026-07-15. Last updated: 2026-07-22.
Frequently asked questions
What power connector does the AMD Radeon RX 7900 GRE use?
The AMD Radeon RX 7900 GRE uses 2× 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 AMD Radeon RX 7900 GRE?
A classic multi-8-pin quality PSU works for the AMD Radeon RX 7900 GRE. An ATX 3.x unit is a sensible buy for its transient-load headroom, but it is not required.
What size PSU pairs with the AMD Radeon RX 7900 GRE?
For a typical companion system we estimate a 650 W minimum and 650 W for comfort. Use the PSU Calculator for your exact CPU and parts.