ASUS GeForce RTX 5080 Astral OC Review 34

ASUS GeForce RTX 5080 Astral OC 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, videos or forum posts.

Graphics Card Teardown PCB Front
Graphics Card Teardown PCB Back

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

Circuit Board (PCB) Analysis

GPU Voltage, VRM Configuration
GPU Chip Voltage Controller

A 20-phase VRM powers the GPU, highlighted in the red rectangles above. These are controlled by a Monolithic Power Systems MP29816 controller.


The GPU VRM uses Vishay SIC654A DrMOS components rated for 50 A.

Memory Voltage, VRM Configuration
Memory Chip Voltage Controller

Powering the eight GDDR7 memory chips is a 3-phase VRM driven by a uPI uP9529Q controller.


For memory, Vishay SIC654A DrMOS with a 50 A rating are used, too.

Graphics Card Memory Chips

The GDDR7 memory chips are made by Samsung, and bear the model number K4VAF325ZC-SC32, they are rated for 32 Gbps.

Graphics Chip GPU

The NVIDIA GB203 GPU at the heart of the GeForce RTX 5080 is much smaller than the chip used on the RTX 5090. It is fabricated using a 5 nanometer "NVIDIA 4N" process at TSMC Taiwan (same process as Ada). The die measures 378 mm², and comes with a transistor count of 45.6 billion.
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