Dell r640

Hi guys. I'm just starting to build my homelab server for pentesting lab.

Server will be running a pfsense box and other 3 to 6 vm (1-2 gb ram each)

I'd like to know how noisy it is but no videos on yt about it. If anyone has a r640, can you place a video of the server running, so I can decide between place in my room or in the room next to it. I'd really appreciate if you could or any reference is very helpful.