We have yet to see if Small Vega is front End bottlenecked like big Vega is. On paper it is not bottlenecked, by any means. You may be right, that in proper scheduling front end scenario vega may be faster than Polaris, in the manner you have posted. However ALUs in GPUs are always only ALUs. That is why 1.3 GHz 1280 CUDA core GPU, with 192 GB/s memory bandwidth, will perform exactly like 1.3 GHz, 1280 GCN core GPU with 192 GB/s. Other things like Tiled Based Rasterization, Operand Reuse Cache, only save bandwidth, Register File Size, and in result: power, and allow GPUs to increase core clocks higher. On graphcis side, if you are not severly bottlenecked elsewhere - ALUs will always play main role.Does AMD use the same Apple Pro branding elsewhere?
16 Polaris CUs would be equivalent to 12 Vega CUs. It is AMD's problem if they cannot upgrade the memory while keeping the price.
I would say 16 Vega CUs should cost the same as 16 Polaris CUs, as they come two years later.
If he was talking about 20 Vega CUs, it would be OK for the card to cost more than $99 (there's already a big premium to go from 8 to 11).
Let me break it down, a bit.It's one way of looking at this. But it has to be commercially viable for them, or why would they sell the product to begin with. There is a reason why Nvidia does not use HBM2 — too expensive. Vega is a premium product in the sense that it uses very expensive tech. They can't really sell it to an average person. Apple is great partnership for them, since customers are ready to pay more for Apple products.
Single GDDR5 memory chip costs currently 7-8$, depending on capacity. It is 32 Bit, 512 MB-1 GB chip. If you want to build 4 GB, 256 GB/s memory subsystem, you have to pay 56-64$, for 8, 8000 MHz GDDR5 memory chips. GDDR6 memory chips will cost 25% more, than that.
Single 4 GB HBM2 stack costs 40$. That price does not include TSV's and interposer cost. Big Vega's 10 GPU, memory subsystem, with two stacks of HBM2, including TSV's and Interposer costs 100$, for dual 4 GB chips, and 320$ for 16 GB chips(single 8 GB HBM2 chip costs 150$). For Small GPU, like Vega 10, HBM2 plus TSV's and Interposer memory subsystem it may cost around 50$, at best.
However, GDDR6 memory, even with 25% price increase, will alleviate that price for 128 Bit memory subsystem, with 224 GB/s memory bandwidth, with 4 GB of Frame Buffer to just 40$.
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