From this speculation came the thought of a full blown die, the Hawaii XTX. The existence of this die was said to be kept under wraps by AMD for competitive strategy against NVIDIA. It looks like it has now been confirmed that the Hawaii XTX does exist!
Reports have surfaced that say AMD is working on a new single-GPU graphics card to compete with NVIDIA’s GeForce GTX 780 Ti and maybe even the GeForce GTX Titan Black. While we expect this new graphics card to have a clock speed bump, it will also leverage high-bandwidth memory (HBM). This new cutting edge technology relies on stacking multiple DRAM dies with dedicated memory paths into a single package. This will effectively cut down on power draw, temperatures and PCB real estate.