Reporting on Device CPU and Memory

I have a requirement to produce a monthly report on all our Intune managed Windows devices and the applications they have installed.  I have written a script that is able to report on UPN, Device Name, Manufacturer, Model, Serial Number, OS, Total HHD and Free space along with all the applications installed.  I am however unable to output the devices CPU and Memory details. 

I have tried using the Get-MgBetaDeviceManagementManagedDevices with the ProcessorArchitecture and PhysicalMemoryInBytes parameters but these just report 0 or NULL.

What is the best way to report on the CPU and Memory from Intune?