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Circuit Board (PCB) Analysis
Unlike NVIDIA's Founders Edition boards, which implement MPS controllers, MSI uses a pair of UPI 9512R controllers in combination with an OnSemi NCP81611 to pull the various power domains of the GA102 GPU.
For GPU voltage, a 16-phase VRM configuration is installed.
MSI is using OnSemi NCP302150 DrMOS throughout the VRM capable of 50 A.
Memory voltage uses a 4-phase design and is generated by a UPI uS5650Q. Note the placement of the memory VRM phases—all spread out among the GPU power phases. The reason seems to be improved thermal performance and better voltage stability.
The GDDR6X memory chips are made by Micron and carry the model number D8BGW, which decodes to MT61K256M32JE-19:T. They are specified to run at 1188 MHz (19 Gbps GDDR6X effective).
GDDR6X doubles the data rate once again over GDDR6. It no longer transmits one bit of information by setting the voltage to either "on" or "off", but instead sends two bits of information at the same time by using four different voltage levels.
NVIDIA's GA102 graphics processor is the company's second Ampere architecture chip; the first one targeted at GeForce gamers. It is produced on a 8 nanometer process at Samsung and has a transistor count of 28 billion with a die size of 628 mm².