Information in this article applies broadly to tablets made by various manufacturers (Google, Apple, Samsung, etc.).
The brand or architecture of a processor doesn’t matter as much as its technical specifications, specifically its speed and the number of cores it has. The processor usually plays a key factor in the price of a tablet. The most powerful tablets on the market today, such as the Microsoft Surface Pro 7, have octa-core CPUs with processing speeds over 2 GHz.
If you only need a tablet to read books and browse the web, you can find budget tablets that have enough processing power for those purposes. If you want to use a tablet to play 3D games or do graphic design work, a higher-end CPU is necessary.