HI,
As far as i know, this is a workstation grade machine, therefore it has no IDRAC/IPMI feature installed.
Even though you can run ESXi on, this hardware is not on the ESXI supported hw list. Probably you can use this machine as only compute resource without benefits of a dedicated server hardware. Not knowing the cpu and system temperature has no effect on the performance/life. You just need to be careful to the assigned resources to the vms and not overprovisioning (too much)
If you decide to move to hosted virtualization (like WIN/LNX + VMware Workstation) then you can use third party monitoring tools like CoreTemp or others.
I'm also using a Dell 7810 for homelab with WIn10+Workstation, and it works well. The vents speeds up when necessary.
Cheers,