Do i need 2 extruders?

Hi!

Just wonder about if i save any time when printing with 2 extruders ? I cant find any information about why its good to have 2 extuders. Only that i can write in 2 colours at the same time. But i want to speed up the writing. Therfore… Can i load both extruders with the same PLA-colour and save printtime ? Or does it write with 1 extruder at the time anyway ?

Thanks in advance!
Kind regards
Johan

the second nozzle is for dual color/material printing.

The second will not decrease the printing time.