VMware has introduced the “vRAM” licensing concept with vSphere 5. The vRAM is the amount of memory you can allocate to your virtual machines running on an ESXi host. If you have a 2 x socket host running Enterprise+ licenses you will be able to allocate 96GB + 96GB = 192GB to your virtual machines. If you on the same host were running Standard licenses you would only be allowed to allocate 32GB + 32GB = 64GB of memory. The table sums of the different vRAM entitlements:
Enterprise+ 96GB
Enterprise 64GB
Standard 32GB
Essentials+ 32GB
Essentials 32GB
Free ESXi 32GB