Why do you ask ?
Do you have one of these cards ? What OC have you seen ?
What are the specs of your PC ?
What Temps are you seeing ?
Did you run the Auto OC test to see what your GPU should be set to ?
Are you running two separate PCIe power cords from PSU to GPU ?
Every PC & GPU can be slightly different ... you should not expect to run other peoples setting in your PC, without testing along the way in Small Steps
Even Every Game or Benchmark can have different stable settings
My Open bench type setup [with room type fan for extra circulation]
Room 24C, GPU @ 66C & 2010 - 2025 MHz / 1019 - 1038mV / power 125 -132%
+90 GPU & +900 RAM / Voltage 96