deviceQuery shows Jetson-tx1 GPU Max Clock rate: 72 MHz,Memory Clock rate: 13 Mhz

[xavierSFan]

After I run deviceQuery shows:

CUDA Device Query (Runtime API) version (CUDART static linking)

Detected 1 CUDA Capable device(s)

Device 0: “NVIDIA Tegra X1”
CUDA Driver Version / Runtime Version 8.0 / 8.0
CUDA Capability Major/Minor version number: 5.3
Total amount of global memory: 3994 MBytes (4188004352 bytes)
( 2) Multiprocessors, (128) CUDA Cores/MP: 256 CUDA Cores
GPU Max Clock rate: 72 MHz (0.07 GHz)
Memory Clock rate: 13 Mhz
Memory Bus Width: 64-bit
L2 Cache Size: 262144 bytes

why deviceQuery shows so low clock rates: GPU Max Clock rate: 72 MHz,Memory Clock rate: 13 Mhz
what does Memory Clock rate means ,external DDR memory access?
best regards

[dusty_nv]

The clock rates from deviceQuery may be a bit of a misnomer on Tegra, because it reports the active governor limit. Check the tegrastats command (~/tegrastats) to view the current frequency (reported next to GR3D) or query the stats from the debugfs, similar to max_clocks script.