I have to say that I am with
@BFG10K here: show us your workings!
While we can only speculate on wafer prices, we do have some concrete facts:
- AD106 is 190mm²
- TSMC's 4nm yields should be similar to 7nm at this stage, so a defect rate of 0.07 #/sq. cm is reasonable.
- From the TPU dissection I make the die ratio to be about 1:23, or that AD106 is 12.5mm by 15.2mm.
Taking those figures to
https://isine.com/resources/die-yield-calculator/ gives me:
So ignoring partial dies (if there are many of these, Nvidia might eventually release a plain 4060 based on AD106 instead of AD107), we get 259 good dies.
Like I said we have no idea what TSMC charges for a 4nm wafer but at 259 good dies:
at $10,000 per wafer it would be around $39
at $15,000 per wafer it would be around $58
at $20,000 per wafer it would be around $77
at £30,000 per wafer it would be around £116
$30k likely to be far too high, but let us take the €20k price. Under $80 per die, then Nvidia sell the die and 8GB of GDDR6 to the OEMs. A quick search as GDDR6 at a spot price at around $3.50 so $28 or so (I think DRAMExhange prices per GB - but also Nvidia have huge volumes so would a lot less than spot prices).
So at worst we are at $108 now. Plenty of scope to cut prices from $400 IMO. And lower end parts should be lower margins parts which make up for that by volume.
Or maybe it is even worse than that: if we ignore their largely self-inflicted mining boom overstocking and the huge corrections they had to declare for their results this years, then Nvidia's margins have actually gone up as the cost per transistor has gone up. So much for Jensen moaning like O'Leary about the cost of doing business (in Jensen's case the cost of wafers, in the case of the Ryanair boss the cost of just about anything).
IMO AMD's problem recently has been that while their fixed costs have gone up (leading edge GPUs in 2023 are really really expensive to design, write drivers for etc.), they are not willing to aggressively go for volume.
High fixed costs spread over a low volume = high overheads per item sold. Little profit overall.
High fixed costs spread over high volumes = lower overheads per item sold. More overall profit?
Profit = cost (fixed and unit costs)
less (margins
times volume).