Gigabyte GA-K8NNXP-940 User Manual page 19

Dual Channel DDR:
GA-K8NNXP-940 supports Dual Channel Technology.
When Dual Channel Technology is activated, the bandwidth of memory bus will be double the original
one,with the fastest speed at 6.4GB/s DDR400.
GA-K8NNXP-940 includes four DIMM slots, and each Channel has 2 DIMMs as following:
Channel A : DIMM 1, 3
Channel B : DIMM 2, 4
Below are the explanations:
1. One,DDR memory module is installed: The Dual Channel Technology will not operate
when one, DDR memory modules is installed and it will only work as Single Channel.
2. Two DDR memory modules are installed (the same memory size and type): The Dual
Channel Technology will operate when two DDR memory modules are inserted indi-
vidually into Channel A and Channel B (DIMM 1 pairs up with DIMM 2 and DIMM 3, 4).
However, if the two DDR memory modules are inserted into the same Channel (DIMM
1,3 or DIMM 2,4) then Dual Channel Technology will not operate.
3. If four DDR memory modules are installed (two pairs of DDR memory modules with the
same memory size and type): The Dual Channel Technology will operate when a pair
of DDR memory modules are inserted into DIMM1, 2 and another pair into DIMM 3,4.
The following tables include all memory-installed combination types:
(Please note that those types not in the tables will not boot up.)
l Figure 1: Dual Channel Technology (DS: Double Side, SS: Single Side)
2 memory modules
4 memory modules
l Figure 2: Don't operate Dual Channel Technology (DS: Double Side, SS: Single Side)
1 memory module
2 memory module
*The K8NNXP-940 don't support 3 memory modules. If 3 memory modules are inserted, the system will
not boot.
k8nnxp-940_1001_q.p65
DIMM 1 DIMM 2
DS/SS DS/SS
X X
DS/SS DS/SS
DIMM 1
DS/SS
X
DS/SS
- 19 -
19
DIMM 3 DIMM4
X X
DS/SS DS/SS
DS/SS DS/SS
DIMM 3
X
DS/SS
DS/SS
Hardware Installation Process
2003/10/2, ¤U¤È 05:19