10-01-2019, 07:42 AM
https://www.techpowerup.com/259651/amd-n...-some-more
Quote:"Navi 14" is expected to be the smallest of the three, with an estimated 170 mm² die-area, about 24 RDNA compute units (1,536 stream processors), and expected to feature a 128-bit wide GDDR6 memory interface. It will be interesting to see how AMD carves out an SKU that can compete with the GTX 1660 Ti, which has 6 GB of 192-bit GDDR6 memory. The company would have to wait for 16 Gbit (2 GB) GDDR6 memory chips, or piggy-back eight 8 Gbit chips to achieve 8 GB, or risk falling short of recommended system requirements of several games at 1080p, if it packs just 4 GB of memory.
The 350-400 mm² "Navi 12" is a whole different beast, with an estimated 64 compute units (4,096 stream processors). The big news in the 3DCenter.org report concerns its memory interface. AMD will stick to 256-bit GDDR6 memory with the "Navi 12," and probably dial up memory clocks compared to the 14 Gbps speed the "Navi 10" uses. This design choice is influenced by NVIDIA's decision to stick to 256-bit bus width with its "TU104" silicon. AMD appears to have had enough of expensive memory solutions such as HBM2, at least in this market segment.