AMD Radeon RX 6800 Review 112

AMD Radeon RX 6800 Review

Test Setup »

High-Resolution PCB Pictures

These pictures are for the convenience of volt modders and people who would like to see all the finer details on the PCB. Feel free to link back to us and use these in your articles or forum posts.

Graphics Card Teardown PCB Front
Graphics Card Teardown PCB Back


High-res versions are also available (front, back).

Circuit Board (PCB) Analysis

GPU Chip Voltage Controller
GPU Voltage, VRM Configuration

AMD is using a 12-phase GPU VRM design, which is powered by an expensive Infineon XDPE132G5D 16-phase VRM controller. For GPU voltage, a 12-phase VRM configuration is installed. Surprisingly, this is the same VRM design as on the RTX 6800 XT.


AMD is using Alpha & Omega Semiconductor DrMOS components throughout the VRM. This is a difference to the XT, which uses International Rectifier DrMOS chips.

Memory Chip Voltage Controller
Memory Voltage, VRM Configuration

Memory voltage uses a 3-phase design controlled by an International Rectifier IR35217 controller.

Graphics Card Memory Chips

The GDDR6 chips are made by Samsung, carry the model number "K4ZAF325BM-HC16," and are rated to run at 16 Gbps.

Graphics Chip GPU

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.
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