Windows server 2008 enterprise edition will utilize full 12 gb ram or not?

I have Core 2 duo with 3GB ddr2 333.3MHZ RAM machine running on Windows server 2008 enterprise edition.I want to upgrade this machine with 12GB RAM and want to run Oracle VM or VMware virtual machine with sharepoint 2010 on this.Could anyone please confirm, Windows server 2008 ent ed. will utilise all ram (12 gb ) or it will show (use) max 3 gb ram as windows xp OS does?

Well, if you are having the 32bit Windows server 2008 enterprise edition installed in your computer then it will recognize only 4gb of ram. But if you have the 64 bit version of Windows server 2008 enterprise edition then it will recognize all the 12 gb of ram. You can get more information by looking at the chart at this link - http://msdn.microsoft.com/en-us/libr...ws_server_2008