Nvidias 2017 flagship graphics card, the 1080Ti has 3584 CUDA cores that can boost up to 1.582Ghz.
Tip: CUDA is Nvidias brand name for its graphics processing cores.
This provides more headroom to generate heat and so allows them to have more cores running faster.
Another advantage discrete GPUs have over integrated graphics is dedicated VRAM or Video Random Access Memory.
VRAM is used to store graphics data that will be used to render an image.
The VRAM chips on a graphics card are also physically closer to the GPU itself further reducing delays.
They are given to increase the excitement when playing slots and other games.
Integrated graphics are significantly more power-efficient and generate a lot less heat than a discrete GPU.
For most users, an integrated graphics chip will be more than enough graphical processing power for day-to-day usage.
They can provide significantly more processing power, although this comes at a higher cost.