A prototype of a large-scale AMD PCIe graphics card has surfaced, featuring a unique quad-GPU configuration. The board is built on the Polaris architecture and integrates four Radeon RX 470 graphics cores, a design that was never released to the consumer market.
The hardware is equipped with a total of 32GB of GDDR5 memory, with each GPU having its own dedicated VRAM. To support this multi-core system, the PCB features a specialized layout and a complex power delivery system, requiring four 8-pin auxiliary power connectors.
Based on the 14nm Polaris 10 architecture, each RX 470 core contains 2048 stream processors and 32 compute units. With four cores combined, the theoretical total reaches 8192 stream processors, significantly exceeding the specifications of standard consumer cards of that era.
The card includes only a single HDMI output and appears to utilize an x8 PCIe interface. These specifications suggest the device was likely an internal engineering validation platform or a specialized computing unit, possibly intended for cryptocurrency mining applications rather than gaming.
While AMD has previously released multi-GPU products like the Radeon Pro Duo, this quad-Polaris prototype remains an outlier in the company's hardware history. It provides a rare look into AMD's internal research and development projects from the 2016 period.
