High-resolution PCB Pictures
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Circuit Board (PCB) Analysis
AMD is using a 13-phase GPU VRM design, which is powered by an expensive Infineon XDPE132G5D 16-phase VRM controller. This is one additional phase compared to the RX 6800 XT.
AMD is using International Rectifier TDA21472 DrMOS components on the Radeon RX 6900 XT.
Memory voltage uses a 3-phase design controlled by an International Rectifier IR35217 controller.
AMD "Navi 21" relies on an external USB 3.2 controller for the USB-C port, supplied by Cypress Semiconductor and labeled "CYPD5137-40LQXI." This controller puts out 10 Gbps USB 3.2 Gen 2, DisplayPort passthrough, and 27 W power delivery.
The GDDR6 chips are made by Samsung, carry the model number "K4ZAF325BM-HC16," and are rated to run at 16 Gbps.
Built on the same TSMC N7 (7 nm) node as Navi 10, the Navi 21 silicon is spread across a 519.8 mm² die-area and packs 26.8 billion transistors. The pinkish-red tinge we saw on the "Navi 10" is gone.