I've never really took note to that I personally don't think its loud at all, i type quite smoothly but still fast. You also have a volume toggle on the keyboard and play, stop. And you can also plug you're headset or mic into the keyboard and it has 3 separate modes.
And trust me if you get the G510 them G keys are so bloody handy
That keyboard does look good indeed. Choosing a comfy & practical keyboard is the key to making things quicker while on computer so i think it is fair to look into it