The M1 Max is slightly off-square and 432mm^2. 19.1 x 22.6 seems like a decent fit. TSMC has stated that N7 defect density was 0.09 a year ago or so. They have

The M1 Max is slightly off-square and 432mm^2. 19.1 x 22.6 seems like a decent fit. TSMC has stated that N7 defect density was 0.09 a year ago or so. They have also since stated that N5 defect density was lower than N7. Let's plug that in here https://caly-technologies.com/die-yield-calculator/ https://caly-technologies.com/die-yield-calculator/ If we go with a defect density of 0.07, that's 94 good dies and 32 harvest dies. At 0.08, it's 90 and 36 respectively. If we put that at 120 dies per wafer and $17,000 per wafer, that's just $141 per chip. That's probably WAAAYY less than they are paying for the i9 chips in their 2019 Macbook Pros. For comparison, AMD's 6900 GPU die is 519mm^2 and Nvidia's 3080 is 628mm^2. Both are massively more expensive to produce.