300K QPS is pretty impressive. If you'd want to sustain that rate on a single modern machine you'll have to fit all your processing into about thirty LLC misses per request.
I admit the QPS/MPS thing doesn't really fit. I mainly wanted to illustrate the data rates of the raw feeds. Twitter has one of the largest raw feeds of the web world, but it's useful to know how that compares to other non-web feeds.
