Servers would probably be way easier than workstations if you ask me. If they were virtual, just bring up the remote console and you can do it all remotely. Even if they were physical I would hope they have an IP KVM attached to each server so they can also remotely access them as well. 450 sucks but at least they theoretically could have done every one of them without going anywhere.
There are also options to do workstations as well, but almost nobody ever uses those services so those probably need to be touched one by one.