Reddit user shared images of a Radeon prototype graphics card. It could have been part AMD’s Vega 20 GPU based accelerator series, but it didn’t.
AMD has released several accelerators based upon the Vega 20 GPU and the GCN 5.1 architecture. This Radeon VII gaming graphic card features 3840 stream processing and 16GB of HBM2 storage with a bandwidth exceeding 1 TB/s. It also includes server accelerators Radeon Instinct MI50, MI60 with 3840stream processors and 4096 stream processors, as well as Radeon PRO Vega II. This last one is probably the most interesting. It was designed for Apple Mac Pro computers and featured two Vega20 GPUs, 32 GB HBM2 RAM, and was exclusively developed. It was the first Radeon graphics cards at that time.
One Reddit user discovered a prototype Radeon Pro VII model based on the Vega 20 GPU. The adapter’s Device PCIID is identical to the Radeon InstinctMI60 model with 4096 cores. The prototype is somewhere in-between. A user uploaded an image of a board with a Vega-20 GPU and four HBM2 modules.
Two connectors supply power to the card: one 8-pin, one 6-pin. It is probable that it consumes about 300 watts. The printed circuit board also contains engineering connectors, which are used only by manufacturers for testing the thermal performance and power efficiency of the video cards. This is a confirmation that this example is not the final product.
Reddit user shared details about the card’s performance under real-life conditions. The prototype doesn’t work at maximum speed, as it turns out. The prototype’s performance in single precision operations is approximately 13.5 Tflops and the memory speed is 6614MB/s.
This model is available in the TechPowerUP portal database. According to the provided information, the named accelerator was supposed receive Radeon Pro V420.