Gigabyte GA-7IX User Manual page 41

7IX Motherboard
Memory
The category is display-only which is determined by POST (Power On Self Test) of the
BIOS.
Base Memory
The POST of the BIOS will determine the amount of base (or conventional)
memory installed in the system.
The value of the base memory is typically 512 K for systems with 512 K
memory installed on the motherboard, or 640 K for systems with 640 K or more
memory installed on the motherboard.
Extended Memory
The BIOS determines how much extended memory is present during the
POST.
This is the amount of memory located above 1 MB in the CPU's memory
address map.
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