We used MSI Afterburner to overclock the Palit 1660 SUPER. Our best result came with +160MHz core offset, and +900MHz memory offset.
Average clock speed under load
This overclock resulted in our graphics card averaging 2068MHz under load, 140MHz faster than its stock behaviour.
This extra frequency resulted in gains of 8-9% across our games and 3DMark scores, so again pretty typical of a Turing card.