Yesterday, we reported that the latest AMD Software Adrenalin 25.10.2 WHQL drivers disable USB-C power delivery on reference Radeon RX 7900 XTX and RX 7900 XT. However, it appears that this was a mistake, and AMD has contacted TechPowerUp to clarify the situation. To make sure that the functionality is back, we tested USB-C power delivery on our own reference card. Readers might remember that the Made by AMD (MBA) reference Radeon RX 7900 XTX and RX 7900 XT graphics cards include USB Type-C ports. These ports support DisplayPort 2.1 passthrough and provide USB power delivery up to the PD 3.0 standard of 30 W.

While the port does not support USB data transfer, it is wired for DisplayPort and power delivery. This theoretically allows you to connect certain monitors that use a single USB-C connection for both display input and power. We tested the feature to make sure it is supplying the port with sufficient power. Using a USB-C power meter, we recorded 27 W of power output from the AMD Radeon RX 7900 XTX. Impressively, the card can supply full power to the port even without a driver installed, as demonstrated in our test. Installing the latest driver doesn't alter this behavior, indicating that the original driver changelog was just incorrect. To confirm that the 27 W charging is consistent, we charged a laptop with a completely empty battery to full capacity. While charging, we loaded Furmark test, and the load was maintained, proving that the feature works as intended.
AMD's statement follows after the break.Read full story

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