DFI AM636-B - Manual (Page 15)

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2
Hardware Installation
BIOS Setting
Configure the system memory in the Genie BIOS Setting submenu of the BIOS.
Refer to chapter 3 for more information.
DIMMs are on the same channel.
DIMMs in a channel can be identical or com-
pletely different.
Not all slots need to be populated.
DIMMs of different memory configurations are
on different channels.
Odd number of slots can be populated.
DIMMs of the same memory configuration are
on different channels.
In single channel, requires even number or
rows (side of the DIMM) populated. This mode
can be enabled with 1 SS, 2 SS or 2 DS.
In VSC mode, both channels must have identi-
cal row structure.
Single Channel
Virtual Single Channel
Dual Channel
Dynamic Mode
Addressing
The system board supports the following memory interface.
Single Channel (SC)
Data will be accessed in chunks of 64 bits (8B) from the memory channels.
Virtual Single Channel (VSC)
If both channels are populated with different memory configurations, the MCH
defaults to Virtual Single Channel.
Dual Channel (DC)
Dual channel provides better system performance because it doubles the data
transfer rate.
Dynamic Mode Addressing
This mode minimizes the overhead of opening/closing pages in memory banks al-
lowing for row switching to be done less often.