NVIDIA’s high-priced flagship GPU, the GeForce RTX 3090 Ti, is a Titan card in all but name. As befits that class of card, it not only has a wide 384-bit memory bus, but also hot-clocked GDDR6X memory running at 21 Gbps per pin, giving it an out-of-the box bandwidth just shy of 1 TB/sec at 1008.3 GB/sec.

Still, some workloads, like Ethereum

Source: Hot Hardware – NVIDIA GeForce RTX 3090 Ti Memory Gets Overclocked To 24Gbps For Insane Bandwidth