The memory frequency was increased to 1500 MHz making it effectively 24 Gbps and the boost clock was raised by 200 MHz and seen reaching 3045 MHz using the ASUS GPU Tweak overclocking software.
Expect this ASUS ROG Astral RTX 5090 signed by NVIDIA's CEO to fetch approaching $20,000, or maybe even more than that, ...
That said, there's plenty of overclocking headroom on the GeForce RTX 4070 Ti - so firing up ASUS's excellent GPU Tweak III app is an easy way to get a few extra frames in several games.