AMD is about to unveil its next-gen architecture — based on a 16nm FinFET manufacturing process — later this week. Codenamed Polaris, the shift to 16nm will usher in fourth-generation Generation Graphics Core Next compute units, leveraging High-Bandwidth-Memory 2.
Polaris will be a significant shift from the 28nm process currently used by AMD. Going with 16nm will result in significant performance gains, and chips based on Polaris will include enhancements to the display engine, command processor, L2 cache, and the memory controller.
The first cards based on the architecture — the Radeon 400 series — are rumored to debut in the summer.