NVIDIA GeForce RTX 4080 Founders Edition PCB Pictured, Revealing AD103 Silicon
Here's the first picture of the PCB of the NVIDIA GeForce RTX 4080 Founders Edition. With NVIDIA cancelling the AD104-based GeForce RTX 4080 12 GB, the significantly buffed, AD103-based RTX 4080 16 GB is now referred to as simply the RTX 4080. The picture reveals an asymmetric PCB shape to fit with the Founders Edition dual-axial flow-through design. The card pulls power from a 16-pin ATX 12VHPWR connector, and appears to use roughly a 16-phase VRM. The PCB has many blank VRM phase traces, although just eight memory-chip pads to go with the 256-bit wide GDDR6X memory interface of the AD103 silicon.
The AD103 silicon features a rectangular die, and a fiberglass substrate that looks about the same size as past-generation NVIDIA GPUs with 256-bit wide memory interfaces, such as the GA104. The AD103 GPU is probably pin-compatible with the smaller AD104, at least as far as substrate-size is concerned; so minimal PCB design R&D effort is put into designing the 12 GB and 16 GB variants of the RTX 4080. The RTX 4080 12 GB is now gone, and the AD104 will power --70 classs SKUs with fewer shaders than what would've been the RTX 4080 12 GB. The display output configuration remains the same as the RTX 4090, with three DisplayPort 1.4a, and an HDMI 2.1a. NVIDIA is expected to launch the GeForce RTX 4080 on November 16, priced at USD $1,199 (MSRP).Continue Reading