TechPowerUp:
"The only truly new silicon with the R9 300 series, is "Fiji." This chip will be designed to drive AMD's high-end single- and dual-GPU graphics cards, and will be built to compete with the GM200 silicon from NVIDIA, and the GeForce GTX TITAN-X it will debut with. This chip features
4,096 stream processors based on the GCN 1.3 architecture - double that of "Tonga,"
256 TMUs, 128 ROPs, and a
1024-bit wide HBM memory interface, offering 640 GB/s of memory bandwidth. 4 GB could be the standard memory amount. The three cards AMD will carve out of this silicon, are the R9 390, the R9 390X, and the R9 390X2."
Of course this is all rumor, but I think the leaks are probably close to what the 390 is going to be. I just hope AMD nails the reference cooler this time, and has AIB partners ready to go earlier. With AMD having a head start with HBM, they have a real opportunity to really stick it to Nvidia that will bring fierce competition and price cuts.
AMD just needs to do is stick the landing. pls AMD.