The "VMware EVC" setting under the "Configuration" tab is not universally visible across all virtual machines. This option is hidden under the following circumstances:
VMware vCenter Server 7.0.x
VMware vCenter Server 8.0.x
VMware vSphere ESXi 7.0.x
VMware vSphere ESXi 8.0.x
The "VMware EVC" option under the Configuration tab applies only to virtual machines upgraded to hardware version 14 or newer.
Upgrade the virtual machine hardware to version 14 or newer, as outlined in Upgrading a virtual machine to the latest hardware version (multiple versions).
When verification of virtual machine EVC mode is required without modifying per-VM EVC settings, use the below workaround.
Execute the following PowerCLI cmdlets to query the EVC mode of individual virtual machines:
Get-VM | select Name,HardwareVersion,@{Name='EvcMode';Expression={$_.ExtensionData.Runtime.MinRequiredEVCModeKey}}