nope. deno runs "fresh" web server that spits out html. you would need a vps for that, until some hosting providers don't include deno/fresh as supported(unlikely in near future).
from the software standpoint, it's invisible to the programmer. it's about bandwidth of the memory bus. when you have single shared memory lane, bandwidth gets split between memory modules. typically(on most of the consumer hardware) there are 2 memory channels.