Wordpress fastcgi_cache vs plugins cache wordpress.

Hello! I want to make the site as quickly as possible , then I would know how to make 100 % static , because I see that would be the way of getting the wordpress but fast as possible .

I wanted to know whether there are differences between.

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nginx fastcgi_cache vs wp_supercache
or
nginx fastcgi_cache vs w3 total cache

is there any web tool that I can test both? simulate 5k users simultaneous browsing online ?
so I can calculate consumption .

 

Thanks for attention.
You have tutorial, for configuration nginx fastcgi_cache and simulate 3k users simultaneos on blitzio?