I have total 144GB memory installed on X8DTN+-F motherboard. BOIS did show total of 144GB memory detected. Why when booting into Windows 2008 64 bits, OS claims that only 32GB can be used?
The issue is related to the limits on physical memory that can be handled by Windows OS. Please refer to below link.
http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx#physical_memory_limits_windows_server_2008_r2