Maybe the 4080 will be much higher clocked than the 4090 to compensate for less SMs, the rumoured TDP difference between them is only 30w which if true would back this up.Interesting the 4080 has a dedicated 103 die now rather than using the 104 die. That the xx80 class has used prior to the 3080.
Seems like AMD won't be catching Nvidia on the back foot this time. The difference in the SM count between 102 and 103 is huge though. Unless there is a significant reduction in clock speed, that is going to suck energy. But it isn't really translating into performance. 60% more SMs but only 26% faster based on what ever those peformance numbers are supposed to represent.
Based on the 256 and 128 bit bus of the 4080 and 4070 respectively it seems like Nvidia will have their own version of infinity cache. I wonder if people will go around saying these cards are being held back by their memory bandwidth and that Nvidia should just use a bigger bus .
The 4080 may escape this time but I'm sure there will be a 10gb not enough thread for the 4070.