Gigabyte GA-K8NF-9 User Manual - Page 15

English Dual Channel DDR GA-K8NF-9 supports the Dual Channel Technology. After operating the Dual Channel Technology, the bandwidth of Memory Bus will double. GA-K8NF-9 includes 4 DIMM sockets, and each Channel has two DIMM sockets as following: Channel A : DDR 1, DDR 3 Channel B : DDR 2, DDR 4 If you want to operate the Dual Channel Technology, please note the following explanations due to the limitation of nVIDIA chipset specifications. 1. Dual channel memory cannot be used if one DDR memory module is installed. 2. If two DDR memory modules are installed (same storage capacity), one must be added to a Channel A slot and the other in a Channel B slot in order to use dual channel memory. You can simply install the memory modules into slots of the same color but we recommend slotting them into DDR1 and DDR2. Dual channel memory cannot function if both DDR memory modules are installed on the same channel. 3. If four DDR memory modules are installed, please use memory of the same storage capacity in order to use dual channel memory and for BIOS to detect all the DDR memory modules. The following table is for Dual Channel Technology combination: (DS: Double Side, SS: Single Side) 2 memory modules 4 memory modules DDR 1 DS/SS X DS/SS DDR 2 DS/SS X DS/SS DDR 3 X DS/SS DS/SS DDR 4 X DS/SS DS/SS The GA-K8NF-9 doesn't support 3 memory modules. If 3 memory modules are installed, the system will not boot. - 15 - Hardware Installation