Foxconn A78AX-K - Manual (Page 37)

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Memory Configuration
► Bank Interleaving
Interleaving allows banks of SDRAM to alternate their refresh and access cycles. One
bank will undergo its refresh cycle while another is being accessed. This improves memory
performance by masking the refresh cycles of each memory bank.
However, bank interleaving only works if the addresses requested consecutively are not in the
same bank.
► Channel Interleaving
Dual channel (Interleaved) mode offers the highest throughput for real world applications. Dual
channel mode is enabled when the installed memory capacities of both DIMM channels are
equal. If different speed DIMMs are used between channels, the slowest memory timing will be
used.
To achieve Dual Channel Interleaving mode, the following conditions must be met:
Matched DIMM configuration in each channel
Same Density (128MB, 256MB, 512MB, etc.)
Matched in both Channel 0 and Channel 1 memory channels
► Enable Clock to All DIMMs
This setting is to control EMI.
When disabled, the system will turn off clock on the empty DIMM slots and to reduce EMI
(Electro-Magnetic Interference).
► MemClk Tristate C3/ALTVID
Enables the DDR memory clocks to be tristated when alternate VID mode is enabled.
► Memory Hole Remapping
This item is used to enable/disable memory remapping around memory hole.
PCI doesn't actually care much which addresses are used, but by convention the PC platform
puts them at the top of the 32-bit address space. For many years it wasn't possible or practical
to put that much RAM into a PC. But now it is, so it's up to the memory controller and host
bridge to figure out what to do. Many systems cause that high RAM to simply be ignored,
CMOS Setup Utility - Copyright (C) 1985-2005, American Megatrends, Inc.
Memory Configuration
Memory Configuration Memory Configuration Help Item
Bank Interleaving [Disabled] Enable bank memory
Channel Interleaving [Enabled] Interleaving Channel Interleaving [Enabled] Interleaving
Enable Clock to All DIMMs [Disabled] Enable Clock to All DIMMs [Disabled]
MemClk Tristate C3/ALTVID [Disabled] MemClk Tristate C3/ALTVID [Disabled]
Memory Hole Remapping [Enabled]
DCT Unganged Mode [Always] DCT Unganged Mode [Always]
Power Down Enable [Enabled] Power Down Enable [Enabled]
Power Down Mode [Channel]
↑↓←→:Move Enter:Select +/-/:Value F10:Save ESC:Exit
F1:General Help F9:Optimized Defaults
[Disabled]