RTX 2060 has ray tracing. It’s hardware-accelerated ray tracing (vs. software-based ray tracing you’d find in cards such as the AMD RX 5700 XT). It beats its competitors right out of the water with the only trade-off being a higher power consumption.
The RTX 2060 is a decent gaming card. It can manage 4K gaming around 30 FPS for the more modern game titles. It has hardware-accelerated ray tracing.
Yes, the RTX 2060 is good enough. But if you’re purchasing a card for Valve Index, the minimum you should think of is the RTX 2070 Super.