Not too old.  Just have to supply the GPU bios in the settings.   Works but Unraid 6.7.2 will only pass GPU thru if the VM has not been used since the initial boot of Unraid.   Unraid is not resetting something when the VM shuts down or the VM reboots.   I have used the GT240 many times for the VMs from 3 years ago to about 1 year ago, then I stopped using the VM's.  So tried a new VM now, VM doesn't reboot or shutdown properly.   It also could be the VM.