drkohler said:
The 40CU PS5 die is rumoured to be around 310-320mm^2. It is unlikely those additional 16-20 CUs would take 90-100mm^2 (assuming a fifth gddr6 controler) in the XSX. It's still a guessing game in the end. |
No, that's exactly how much it currently takes for an extra 16 CUs. Take the Radeon 5600 compared to the 5700. 16 extra CUs for exactly 90 - 100 mm2. The CU itself is smaller, but it isn't the only thing you need to add to increase a GPU in size.
Also do consider the PS4 Pro and the XB1X as an example since, despite the die shrink, the RDNA's features in 7 nm take around the same size as GCN on 14 nm. A mere 4 extra CUs on the XB1X for 25 mm2 or so.