Solved: Why Windows server 2008 R2 showing less Total Physical Memory compared with Installed Physical Memory?
![memory - After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB - Server Fault memory - After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB - Server Fault](https://i.stack.imgur.com/kzGmO.png)
memory - After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB - Server Fault
![SQL Server 2008: how much RAM memory should SQL Server use in a 8GB RAM server? - Database Administrators Stack Exchange SQL Server 2008: how much RAM memory should SQL Server use in a 8GB RAM server? - Database Administrators Stack Exchange](https://i.stack.imgur.com/ckR6l.png)
SQL Server 2008: how much RAM memory should SQL Server use in a 8GB RAM server? - Database Administrators Stack Exchange
![Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops](https://4sysops.com/wp-content/uploads/2008/04/4gb.png)