Need educating on reading Clock Speed and Overclocking

Setup: Ubuntu 17, Mobo = MSI170 Gaming M5, 2x Gigabyte 1070 Windforce OC 8G

Attached GPUs                       : 2
GPU 0000:01:00.0
Clocks
    Graphics                    : 1784 MHz
    SM                          : 1784 MHz
    Memory                      : 3802 MHz
    Video                       : 1594 MHz
Applications Clocks
    Graphics                    : N/A
    Memory                      : N/A
Default Applications Clocks
    Graphics                    : N/A
    Memory                      : N/A
Max Clocks
    Graphics                    : 1961 MHz
    SM                          : 1961 MHz
    Memory                      : 4004 MHz
    Video                       : 1708 MHz
SM Clock Samples
    Duration                    : 5.86 sec
    Number of Samples           : 100
    Max                         : 1809 MHz
    Min                         : 1759 MHz
    Avg                         : 1781 MHz
Memory Clock Samples
    Duration                    : 5.86 sec
    Number of Samples           : 100
    Max                         : 3802 MHz
    Min                         : 3802 MHz
    Avg                         : 3802 MHz
Clock Policy
    Auto Boost                  : N/A
    Auto Boost Default          : N/A

So graphics clock is 1784 MHZ out of a max 1961 MHZ. Memory Clock is 3802 MHZ out of max 4004MHZ. My question is when dealing with overclocking, i see people say "+200 cc, +600 mc". If i were to graphics overclock +200, does that mean it would go from 1784MHZ to 1984MHZ? If so, that would be 20MHZ over the max 1961 MHZ. Would that cause my card to crash? Or is "overclocking" pushing performance past maximum ?