High-resolution PCB Pictures

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Circuit Board (PCB) Analysis

GPU voltage is a 17-phase design, managed by a Monolithic Power Systems MP2857 controller.


Monolithic MP87997 DrMOS components are used for GPU voltage; they are rated for 70 A of current each.


Memory voltage is a 2+1-phase design, managed by two Monolithic Power Systems MP2856 controllers.


For memory, Monolithic MP87997 DrMOS with a 70 A rating are used here, too.


The GDDR6 memory chips are made by Hynix and carry the model number H56G42AS8DX-014. They are specified to run at 2500 MHz (20 Gbps effective).


AMD's Navi 31 graphics processor was the world's first GPU that uses a chiplet architecture. Note the large die in the center, called "GCD," graphics compute die, which houses the compute units, it is surrounded by six smaller "MCD," memory cache dies, that contain one memory controller interface and one slice of cache each. While they look similar, the MCDs are not HBM chips. The MCDs are fabricated on a 6 nm process at TSMC Taiwan with a die size of 36.6 mm² each, the GCD is fabricated using TSMC's 5 nanometer node, with a die size of 300 mm². The combined transistor count of the GPU is 57.7 billion.