3
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allocated to the IGP is freed for other use.
2. When installing an ATI PCIe graphics card, SurroundView is disabled by default. Enabling
SurroundView in the BIOS enables the integrated graphics. which in turn makes available up
to two additional graphics outputs.
Memory Configuration
► DCT Unganged Mode
DCT stands for DRAM Controller.
Ganged refers to the use of both DRAM controllers within a memory controller acting in concert
to access memory. For a description of ganged (128-bit DRAM data width) and unganged (64-
bit DRAM data width) DRAM modes :
Ganged channels (DDR3) :
■
DCT channels A and B can be ganged as a single logical 128-bit DIMM.
■
Offers highest DDR3 bandwidth.
■
Requires both DIMMs in a logical pair to have identical size and timing parameters, both
DCTs programmed identically.
Unganged channels
■
DCT channels A and B operate as two completely independent 64-bit channels (both chan-
nels operate at the same frequency).
■ Reduce DRAM page conflicts – more concurrent open dram pages.
■ Better bus efficiency.
Burst lengths supported
When both DCTs are enabled in unganged mode, BIOS must initialize the frequency of each
DCT in order.
CMOS Setup Utility - Copyright (C) 1985-2006, American Megatrends, Inc.
Memory Configuration
Memory Configuration
Help Item
DCT Unganged Mode
[Always]
↑↓←→:Move Enter:Select +/-/:Value F10:Save ESC:Exit F1:General Help
F9:Optimized Defaults
[Always]
This allows selection
of unganded DRAM mode
(64-bit width).
Auto = Ganged mode
Always = Unganged mode
