ethernet cables

Probably a dumb question, but is is there anything faster than CAT 8 that uses the RJ 45 connector? Thanks!

I need to wire my room. I need 50ft. I ordered one off amazon that was a flat cat 7, and that stopped working under a month! The cable will run outside about 1 foot from upstairs to downstairs. So it needs to be weather proof. I will have it plugged into a switch into my room, so I can use my...