I was wondering how to check clock speed before making adjustments on one my co-workers AMD Radeon RX570 GPUs

This is the command you run, it will output the current clock frequencies

cat /sys/kernel/debug/dri/0/amdgpu_pm_info

this is my card

GFX Clocks and Power:
	1750 MHz (MCLK)
	1286 MHz (SCLK)
	96.125 W (VDDC)
	16.0 W (VDDCI)
	123.228 W (max GPU)
	124.227 W (average GPU)

GPU Temperature: 76 C
GPU Load: 100 %

other option is to run  amdgpu-pro which gives you a lot of info


This is what the output looks like

  Device Type:					 CL_DEVICE_TYPE_GPU
  Vendor ID:					 1002h
  Board name:					 Radeon RX 570 Series
  Device Topology:				 PCI[ B#4, D#0, F#0 ]
  Max compute units:				 32
  Max work items dimensions:			 3
    Max work items[0]:				 1024
    Max work items[1]:				 1024
    Max work items[2]:				 1024
  Max work group size:				 256
  Preferred vector width char:			 4
  Preferred vector width short:			 2
  Preferred vector width int:			 1
  Preferred vector width long:			 1
  Preferred vector width float:			 1
  Preferred vector width double:		 1
  Native vector width char:			 4
  Native vector width short:			 2
  Native vector width int:			 1
  Native vector width long:			 1
  Native vector width float:			 1
  Native vector width double:			 1
  Max clock frequency:				 1286Mhz
  Address bits:					 64
  Max memory allocation:			 1095910195
  Image support:				 Yes
  Max number of images read arguments:		 128
  Max number of images write arguments:		 8
  Max image 2D width:				 16384
  Max image 2D height:				 16384
  Max image 3D width:				 2048
  Max image 3D height:				 2048
  Max image 3D depth:				 2048
  Max samplers within kernel:			 16
  Max size of kernel argument:			 1024
  Alignment (bits) of base address:		 2048
  Minimum alignment (bytes) for any datatype:	 128
  Single precision floating point capability
    Denorms:					 No
    Quiet NaNs:					 Yes
    Round to nearest even:			 Yes
    Round to zero:				 Yes
    Round to +ve and infinity:			 Yes
    IEEE754-2008 fused multiply-add:		 Yes
  Cache type:					 Read/Write
  Cache line size:				 64
  Cache size:					 16384
  Global memory size:				 1537495040
  Constant buffer size:				 1095910195
  Max number of constant args:			 8
  Local memory type:				 Scratchpad
  Local memory size:				 32768
  Max pipe arguments:				 0
  Max pipe active reservations:			 0
  Max pipe packet size:				 0
  Max global variable size:			 0
  Max global variable preferred total size:	 0
  Max read/write image args:			 0
  Max on device events:				 0
  Queue on device max size:			 0
  Max on device queues:				 0
  Queue on device preferred size:		 0
  SVM capabilities:				 
    Coarse grain buffer:			 No
    Fine grain buffer:				 No
    Fine grain system:				 No
    Atomics:					 No
  Preferred platform atomic alignment:		 0
  Preferred global atomic alignment:		 0
  Preferred local atomic alignment:		 0
  Kernel Preferred work group size multiple:	 64
  Error correction support:			 0
  Unified memory for Host and Device:		 0
  Profiling timer resolution:			 1
  Device endianess:				 Little
  Available:					 Yes
  Compiler available:				 Yes
  Execution capabilities:				 
    Execute OpenCL kernels:			 Yes
    Execute native function:			 No
  Queue on Host properties:				 
    Out-of-Order:				 No
    Profiling :					 Yes
  Queue on Device properties:				 
    Out-of-Order:				 No
    Profiling :					 No
  Platform ID:					 0x7fbe5fa14510
  Name:						 Ellesmere
  Vendor:					 Advanced Micro Devices, Inc.
  Device OpenCL C version:			 OpenCL C 1.2 
  Driver version:				 2527.3
  Profile:					 FULL_PROFILE
  Version:					 OpenCL 1.2 AMD-APP (2527.3)
  Extensions:					 cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_gl_sharing cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_spir cl_khr_gl_event 

You should always check before and after you make change to your GPUs.  It’s important to always keep your GPU temperature low.  This is running a little hotter only because it’s in a case.  Another good reason to go with an open air mining rig.