Gigabyte GA-6VM7A+ User Manual page 43

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.
Other Memory
This refers to the memory located in the 640 K to 1024 K address space. This is
memory that can be used for different applications.
DOS uses this area to load device drivers to keep as much base memory free
for application programs. Most use for this area is Shadow RAM
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BIOS Setup