Stefan Mileschin

Alongside its big Radeon Pro Duo flagship graphics card launch, AMD unveiled its GPU architecture roadmap that looks as far into the future as early-2018. By then, AMD will have launched as many as three new GPU architectures. It begins with the launch of its 4th generation Graphics CoreNext architecture, codenamed "Polaris," in mid-2016. Built on the 14 nm FinFET process, "Polaris" is expected to offer a whopping 2.5x increase in performance-per-Watt for AMD, compared to its current GCN 1.2 architecture on 28 nm.

Hot on Polaris' heels, in early-2017, AMD plans to launch the "Vega" GPU architecture. While this appears to offer a 50% increase in performance-per-Watt over Polaris, its highlight is HBM2 memory. Does this mean that AMD plans to skip HBM2 on Polaris, and stick to GDDR5X? Could AMD be opting for a similar approach to NVIDIA, by launching its performance-segment GPU first as an enthusiast product, giving it a free run on the markets till early-2017, and then launching a Vega-based big-chip with HBM2 memory, taking over as the enthusiast-segment product? Some time in early-2018, AMD will launch the "Navi" architecture, which appears to offer a 2.5x performance-per-Watt lead over Polaris, taking advantage of an even newer memory standard.

http://www.techpowerup.com/220892/am...m2-memory.html