There is also a previous gen HPC "Titan V" with HBM memory, but AFAICT no Ampere Titan card with HBM2 was announced.
You can see this because the chip name is GA102, the 2 at the end indicates that this is a cut-down chip.
With one exception: the Titan V card that I mentioned which comes with the GV100 chip. But as I mentioned, that one targets a very different market segment with HBM memory, which the "RTX 3090" obviously doesn't target, since otherwise it would come with HBM2 memory like all the GA100 products.
>With one exception:
This is simply wrong. The majority of Titans have been full chips: Titan, Titan Z and Titan Black as well as the Titan V and Titan X.
The other Titans were about as fast as manufacturer-overclocked 80Ti models.
The naming is super confusing. The 100 versions are essentially HPC chips on a PCI-express board, while 10x are completely different products.