For streaming videos i7-8700 is much better compared to i7-6700

Hello, I need to know how more CPU power I get from an i7-8700 hexa-core 64GB compared to an i7-6700 quad-core 32GB
to stream 1280×720 videos. Is it worth it to increase the number of users it can deal with? And how much would the rendering increase?

I'm thinking about raising my budget, but I'd like to know it's worth it. Thank you in advance.