system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are graphics cards improved every year? How can you improve a product so consistently?

What exactly goes on to improve a card?
gpt
The most important factor is the manufacturing process. It's called "photolit*h*ography"- which means "writing *in stone* with light" (edit: Thanks for the correction). Basically, they're using a fancy Xerox to print electronic circuits onto a slice of silicon. 

Over the years, they have found ways to print circuits in finer details, which allows them to cram more stuff onto a piece of silicon. So they're improving the shape of the individual transistors to work better in small sizes and they're also using light with smaller wavelength, which is basically like getting a smaller brush size. In the past few years, they have started to work with a technology called "EUV", that is extreme-ultra-violet. Its "brush size"  is 30 times smaller than the UV-light that causes tan and skin cancer. This is extremely difficult and expensive to work with, but it allows to cram billions of transistors onto a single chip: NVidias top chip, the GA100 used for their "Tesla" cards, has more than 50 billion transistors, compared to 20 billion on its predecessor that was made without EUV.