Tianshu Zhixin’s comes months after Big Island was first announced at the beginning of the year. Back then, the Chinese chipmaker hinted at BI being made with a 7nm process node, along with a 2.5D chip-on-water-on-substrate (CoWoS). The company failed to mention what 7nm process it was using for its GPGPU, but Tom’s Hardware has confirmed that it is a 7nm from TSMC’s foundries.
In addition to its “mass production” announcement, Tianshan Zhixin also shared some information about BI in the form of a slide. It’s written in Chinese, but based on what we can make out, the GPGPU is using 32GB HBM2 memory with speeds up to 1.2TB/s. There’s also a laundry list of its performance in floating point operations, including the usual FP32 and FP16 performance metrics.