what diffrances twin turbo and single turbo

I found an answer from www.reddit.com
Some cars offer both single and twin turbo's, but both options give ...
Nov 27, 2016 ... The twin turbo setup gives you lower torque at low rpms, but who is in the 2000rpm range when racing? There is no difference really, except ...
For more information, see Some cars offer both single and twin turbo's, but both options give ...
I found an answer from en.wikipedia.org
BMW N55 - Wikipedia
Whilst the N54 used a twin-turbo arrangement, the newer N55 uses only a single twin scroll turbocharger. Valvetronic (variable valve lift) is claimed to improve ...
For more information, see BMW N55 - Wikipedia
I found an answer from www.caranddriver.com
Turbochargers vs. Superchargers: Which Is Better?
Dec 12, 2018 ... It currently employs both types of power boosters—a small, conventional (engine-driven) supercharger for low-end response and a turbocharger for ...
For more information, see Turbochargers vs. Superchargers: Which Is Better?