I mean specs given by Nvidia of a specific GPU, as an example, these are the specs of Nvidia GTX 1060 taken from Nvidia website:
GPU Engine Specs
CUDA Cores
1280
Graphics Clock (MHz)
1506
Processor Clock (MHz)
1708
Graphics Performance
high-11048
Memory Specs
Standard Memory Config
6 GB
Memory Interface
GDDR5
Memory Interface Width
192-bit
Memory Bandwidth (GB/sec)
192
Feature Support
Supported Technologies
CUDA, 3D Vision, PhysX, NVIDIA G-SYNC™, GameStream, Surround, ShadowWorks, MFAA, DSR, DirectX 12, Virtual Reality, Ansel, NVIDIA WhisperMode
Display Support
Maximum Digital Resolution
7680x4320@60Hz
Standard Display Connectors
DP 1.43, HDMI 2.0b, Dual Link-DVI
Standard Graphics Card Dimensions
Length
9.823
Height
4.378
Width
2-Slot
Thermal and Power Specs
Maximum GPU Temperature (in C)
94
Maximum Graphics Card Power (W)
120 W
Minimum System Power Requirement (W)
400 W
Supplementary Power Connectors
6-Pin
Which of those specs are useful to compare between GPUs? (example: CUDA cores, Graphics Clock, Memory Interface Width, ...) Which "numbers" mean better or worse performance when comparing between GPUs?