Thread moved to the PowerCLI community.
The following will list all your VMs and show their name, HW memory allocation and the resource allocatyion memory limit.
If that last property shows -1 that means there is no limit.
Get-VM|
SelectName,MemoryGB,
@{n="Resource Limit";E={Get-VMResourceConfiguration-VM$_|Select-ExpandPropertyMemLimitGB}}
