https://wccftech.com/amd-rdna-3-radeon-rx-gpus-and-zen-4-ryzen-cpus-perf-per-watt-gains-5nm/

AMD has reaffirmed that they are committed to offering the same massive graphics perf per watt improvement which they delivered in its RDNA 2 GPU lineup for its next-gen RDNA 3 GPU powered Radeon RX graphics lineup. This much was stated by AMD's Executive Vice President, Rick Bergman, who talked with The Street regarding their next-generation products including Zen 4 CPUs & RDNA 3 GPUs.

During the interview, Rick talked about both the current generation RDNA 2 & the next-gen RDNA 3 GPUs. For RDNA 3, AMD says that they will be leveraging more advanced process nodes and using Infinity Cache in a more proficient way to allow for similar gains which we saw when moving from RDNA 1 to RDNA 2. According to AMD's claims, RDNA 2 based Radeon RX GPUs deliver a 50% perf per watt improvement over their predecessors and AMD promises us to expect similar gains with the third generation RDNA GPU architecture.