Overclocking
Though your own mileage may vary, our first experience of overclocking a GTX 1660 Super suggests that while there is some additional headroom, the benefit in real-world games is negligible. Using an automated tool, boost clock was raised to 1,915MHz while memory scaled to an effective 15Gbps.
Apply a small overclock and GTX 1660 Super practically becomes a GTX 1660 Ti.