Memory clock rate

According to the devicQuery output, the memory clock rate for 2080Ti is 7000MHz

CUDA Driver Version / Runtime Version          10.0 / 10.0
  CUDA Capability Major/Minor version number:    7.5
  Total amount of global memory:                 10989 MBytes (11523260416 bytes)
  (68) Multiprocessors, ( 64) CUDA Cores/MP:     4352 CUDA Cores
  GPU Max Clock rate:                            1545 MHz (1.54 GHz)
  Memory Clock rate:                             7000 Mhz
  Memory Bus Width:                              352-bit

However, in websites such as https://www.techpowerup.com/gpu-specs/geforce-gtx-1080-ti.c2877 the memory clock rate is written as

Memory Clock
    1376 MHz
    11008 MHz effective

May I know how deviceQuery calculates that rate (or fetches from the device)?