Remember when $700 seemed like a lot of money for a top-of-the-line GPU? Quaint times. Like any piece of expensive technology, a top-of-the-line graphics card comes with all manner of lingo and abbreviation. You'll need a glossary to wade through the stuff inside (processors, CUDA cores, ROPs), the speeds measured (memory bandwidth, boost clocks, TeraFLOPS), and the results you want from a good card (anti-aliasing, frame rates, higher resolutions).
Thanks to Nvidia's newest products, the RTX 2080 and RTX 2080 Ti, that required glossary is only getting bigger.