Yesterday the two familiar sites, that leak everything and anything they can, posted the specs on the the upcoming Radeon R9 Nano. The 175W TDP card seems to be a fully enabled Fiji GPU with 4096 stream processors - 256 TMUs and 64 ROPs.
The card supposedly will also hold 4 GB on the 4096-bit HBM memory interface. According to the leak, the core clock speed isn't far off the R9 Fury X with an up to 1000 MHz, with its memory ticking at 500 MHz (512 GB/s).
That does not sound right though, no liquid cooling, small air/fan cooling. And such we think that card will be throttling based on heat. E.g. a target of say 80 Degrees C will be set and the clocks/voltages will be manually adjusted in real-time to adapt the the heat signature and limiters in place.
Korean tech site DGLee posted pictures of an R9 Nano taken apart.
Sources: IYD.kr