A leaked screenshot of an Ashes of the Singularity benchmark shows the NVIDIA GeForce GTX 1660 Ti being tested. So it appears that this card does indeed exist. The card scored 7400 points on the “High” preset, which is about 1200 points higher than what the GTX 1060 scores.
The GTX 1660 Ti is rumored to be based on NVIDIA’s Turing architecture, but will not feature any RT cores for ray tracing. It will make use of the TU116 GPU with 1536 CUDA cores with 6GB of GDDR6 memory.
The card is expected to be sold for less than the RTX 2060, and from what we’ve heard it will be unveiled next month. We’ve also heard of a GTX 1660 (non-Ti) model that will have GDDR5(X) memory.
Thanks to TUM APISAK for the tip.