NEXCOM NEX 980 - Manual (Page 20)

Copyright © 2013 NEXCOM International Co., Ltd. All Rights Reserved. 9 NEX 980 User Manual
Chapter 2 : Installation
2.3 Installation of Memory Modules
(DIMM)
This motherboard provides four 240-pin DDR3 (Double Data Rate 3) DIMM
slots, and supports Dual Channel Memory Technology. For dual channel
configuration, you always need to install identical (the same brand, speed,
size and chip-type) DDR3 DIMM pair in the slots of the same color. In
other words, you have to install identical DDR3 DIMM pair in Dual Channel
(DDR3_A1 and DDR3_B1; Blue slots) or identical DDR3 DIMM pair in Dual
Channel (DDR3_A2 and DDR3_B2; White slots), so that Dual Channel
Memory Technology can be activated. This motherboard also allows you to
install four DDR3 DIMMs for dual channel configuration, and please install
identical DDR3 DIMMs in all four slots. You may refer to the Dual Channel
Memory Configuration Table below.
Dual Channel Memory Configuration
DDR3_A1
(Blue Slot) DDR3_A2
(White Slot) DDR3_B1
(Blue Slot) DDR3_B2
(White Slot)
(1) Populated - Populated -
(2) - Populated - Populated
(3)* Populated Populated Populated Populated
* For configuration (3), please install identical DDR3 DIMMs in all four slots.
1. If you want to install two memory modules, for optimal
compatibility and reliability, it is recommended to install them
in the slots of the same color. In other words, install them
either in the set of blue slots (DDR3_A1 and DDR3_B1), or in
the set of white slots (DDR3_A2 and DDR3_B2).
2. If only one memory module or three memory modules are
installed in the DDR3 DIMM slots on this motherboard, it is
unable to activate the Dual Channel Memory Technology.
3. If a pair of memory modules is NOT installed in the same Dual
Channel, for example, installing a pair of memory modules
in DDR3_A1 and DDR3_A2, it is unable to activate the Dual
Channel Memory Technology .
4. It is not allowed to install a DDR or DDR2 memory module
into DDR3 slot; otherwise, this motherboard and DIMM may
be damaged.
5. Some DDR3 1GB double-sided DIMMs with 16 chips may not
work on this motherboard. It is not recommended to install
them on this motherboard.