Videocardz.com has revealed some more details regarding AMD's upcoming update for the Graphics Core Next architecture, including the Iceland, Tonga and the revised Hawaii GPU, codenamed Hawaii XTX.


While there have already been a few rumors regarding these GPUs, Videocardz.com has now revealed a bit more details regarding each of the upcoming GPUs. The list starts with the Iceland GPU which ends up to be a mid-range GPU. Apparently, the Iceland is a mobile GPU which will launch as a desktop graphics GPU at a later date. The Iceland GPU is meant to replace the Cape Verde GPUs and be a proper Nvidia GM107 competitor.

The next in line is the Tonga GPU, which was rumored recently. According to the report from Videocardz.com, Tonga GPU is nothing more than a revised Tahiti GPU with a 256-bit memory interface. While it is still a Tahiti GPU at its base, AMD will launch the Tonga GPU as a new SKU and not as a Tahiti replacement so both will coexist on the market until AMD is ready to launch the new Radeon 300 series.

The last on the list is the new Hawaii revision, codenamed Hawaii XTX. While there have been a few rumors regarding AMD super Hawaii XTX GPU with 3072 Stream Processors, that one appears to be wrong as the Hawaii XTX is the same thing as the Tahiti XT2 revision. So basically, we will be looking at a higher clocked Hawaii XT GPU which could launch as a Radeon R9 295X graphics card.

Videocardz.com also revealed some more details regarding upcoming GCN feature update including UAV Ordering (Unordered Access View Ordering) which should bring much better scene complexity in future games as well as the new Fast Conservative Rasterization, which will be a hardware upgrade and bring much better effects similar to the TressFX.

Videocardz.com also revealed some details regarding AMD's development of a 500sq.mm+ 28nm GPU, which might end up as a core of Radeon R9 390X, as well as an another chip which is slightly smaller at 350sq.mm+. What is more interesting is that both of these chips are based on a 28HPM manufacturing process which is rarely used for high-end GPUs but also responsible for making the chip very power efficient. According to Videocardz.com, the 500sq.mm+ chip could be the new flagship GPU, aka the R9 390X while the 350sq.mm+ chip could end up to be the Tonga GPU which is similar in size as the Tahiti GPU.

We will probably hear more info soon as the mass production of the Tonga GPU is expected in two weeks so first important details might be ready in August.





Source: Videocardz.com.