Again, maxing out fan speeds and memory clocks while dropping the GPU core clocks and power limit are key to improving overall hash rates. Modding the card and replacing the VRAM thermal pads with thicker/better pads is possible and will help cooling and performance.
Read moreCan you overclock a GTX 1660?
The GTX 1660 tends to run very cool—as in about 62C. And it overclocks very well to about +150 MHz , giving it a boost to around 2050MHz.
Read more