SQL Server RAM Requirements

I have vCenter and SQL Server running on different VMs.  My SQL Server VM is used only for the vCenter and Single Sign on Databases (VCDB and SSO).  Is there a reference to help me determine how much RAM this SQL Server VM needs based on

100 hosts

3000 VMs

Statistics Level 2

Links like the following give you very general information:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2021202

but not enought info to factor in how much extra RAM you need for a given statistics level.

The VMware "Datasbase Sizing Calculator for Microsoft SQL Server"  tells you only how much disk space you need but not how much RAM you need on your SQL Server:

Any input appreciated

Thanks!