As I know, nvidia 1060 used GDDR5 and memory speed reached 8000MT/s, for GDDR5, memory clock should be around 8000 / 4 = 2000MHZ.
For my 1060 3GB card, nvidia-smi showed Clock speed reached 4303MHZ, I am confused what kind of GDDR5 nvidia using.
Graphics : 1873 MHz
SM : 1873 MHz
Memory : 4303 MHz
Video : 1683 MHz
Below website also indicated that 1060 memory clock should be 2000MHZ.