It has a whopping 18,432 CUDA cores, by comparison, NVIDIA’s RTX 6000 ADA low-end professional card ... 48 GB its GDDR6 modules are clocked slower at 864 GB/s whereas the GDDR6X of the RTX 4090 ...

as this card was purportedly a prototype. That could also explain the use of GDDR6 instead of GDDR6X. Compared to the RTX 4090, the RTX Titan Ada outclasses it in shader count and memory capacity.