Greymon55 earlier mentioned that there is a major change to the specs that were shared for more than a year, but has not explained what those changes are. However, should AMD keep 120 WorkGroup Processor (WGP) and 15360 Stream Processor configuration, such single-precision compute performance would require 2995 MHz GPU clock. However, it is very likely that similarly to NVIDIA and their Ada architecture, AMD will be introducing a matrix of different 32-bit instructions that result in higher floating point performance.
Furthermore, contrary to previous rumors, AMD might still keep Compute Units for its RDNA3 (GFX11) architecture. This is suggested by the recent changes to AMD GPU driver discovered by @Kepler_L2:
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