Thanks. But I was talking from $ cost of a similar chip to get through fab. Low volume and complex chip. Would it be $500-$1000 range for just fab cost?
Well, here's some general stats but of course every design/team/fab process/etc is different, and the article is from 2015 :
Semiconductor Engineering - FinFET Rollout Slower Than Expected
The current cost per-wafer (ignoring development costs, mask costs, etc, just the incremental cost of each wafer) could be anywhere in the $4000-$8000 range, I am using what little outdated and non-Samsung-specific info I could find and throwing in some great big error bars to arrive at that number.
If we make use of
Die Per Wafer Calculator - and assume the die is 20.4mm X 12.75mm (stated size is 260mm^2 and the aspect ratio of the die shot is just above 1.6:1), then we get 302 potential dies per 300mm wafer before removing any failed dies. We don't really have any insight into their defect rate but let's say pessimistically that about 50 of those dies are failures. That gets us about 250 usable dies, and a per-die wafer cost of $16-$32, before testing, packaging, etc. The actual effective cost per ready-to-use device is going to be higher, and I'm not really well versed enough in the right aspects of semiconductor manufacturing to begin ferreting those out, and don't feel like spending more time on this at the moment ...
But the per die cost even after testing, packaging, etc, is certainly well below $500 per die. Probably it is below $100 per die, certainly below $200 per die. Consider that AMD is selling CPUs at a profit for around $300 retail that are a bit smaller but on a slightly more expensive (probably, at least "higher performance", though it's from a different vendor so apples and oranges) process, and that includes AMD's margins, retailer margins, etc - and that many of the partially working (or fully working but sold as partially working to supply the demand for cheaper parts - reportedly their yields are very high so they're actually selling fully working parts as low end parts often) can be had for as little as $75. Margins may be lower on these parts, but they're probably still above zero.
So
TL;DR chances are Tesla's (per-board, not including development etc) costs per HW3 chip is less than $100 each, though the total board level cost may be north of $500 (2x HW3 chips, plus 2x of everything to power them, RAM chips, flash storage, etc, plus the board itself and assembly / shipping / etc costs).