Currently, the 5070 is expected to use the GB205 die while the 5090 is expected to use the GB202 die: https://www.techpowerup.com/gpu-specs/geforce-rtx-5070.c4

Currently, the 5070 is expected to use the GB205 die while the 5090 is expected to use the GB202 die: https://www.techpowerup.com/gpu-specs/geforce-rtx-5070.c4218 https://www.techpowerup.com/gpu-specs/geforce-rtx-5070.c4218 https://www.techpowerup.com/gpu-specs/geforce-rtx-5090.c4216 https://www.techpowerup.com/gpu-specs/geforce-rtx-5090.c4216 It is unlikely that the 5070 and 5090 share the same die when the 4090 and 4080 did not share same die. Also, could an electrical engineer estimate how much this costs to manufacture: https://videocardz.com/newz/nvidia-geforce-rtx-5090-pcb-leak-reveals-massive-gb202-gpu-package https://videocardz.com/newz/nvidia-geforce-rtx-5090-pcb-leak...