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Can someone help me contextualize? 300mm diameter is 70,686 mm^3. If a chip is 300mm^3, does that mean the company can print about 235 chips per wafer or is it
by profile53 6y ago
Can someone help me contextualize? 300mm diameter is 70,686 mm^3. If a chip is 300mm^3, does that mean the company can print about 235 chips per wafer or is it much lower? At 235 chips and a 100 dollar retail price, that doesn't leave much of a profit margin (23,500 gross vs 17,000 to TSMC).
- npunt 6y agoA 300mm2 chip would have about 50B transistors, 4x an A14 and 1.8x a Geforce GA102 (RTX 3090 chip). Don't think anyone would sell that for $100 in 2020.
- jsjohnst 6y agoYou need to check your sources or your math, likely both.
- monocasa 6y agoA 5nm 300mm die is pretty close to 50B transistors. The whole chart is based on a 90B transistor 610mm die at 5nm that costs around $200. Hence why the die cost of 90nm implies wafer scale level of transistors for the per chip cost.
- monocasa 6y agoThey have a lot of NRE and packaging costs to recoup. And room for a decent profit margin if you won wafers (the companies all bid against eachother, not just in price but in volume too to get foundary time).
- sudosysgen 6y agoThat's price, not cost. TSMC charges 17.5k, we don't know how much it costs them to make one wafer, probably a lot less.