4xxx series is newest gen. As it goes they've made it more powerful and new technology to do so. xxXx = Big X is "power". So 9 is highest, 8, 7, 6, 5 (3090/308

4xxx series is newest gen. As it goes they've made it more powerful and new technology to do so. xxXx = Big X is "power". So 9 is highest, 8, 7, 6, 5 (3090/3080/3070) etc. Bigger has more compute power, usually more RAM and more power requirements. That's pretty much it. Figure out what you want to do, and then find a card that does that. Want ML? highest RAM you can get. Want high resolution gaming, high ram, high compute power.