Gigabyte GA-8I945GMF Manual - Page 15

English Dual Channel DDR II GA-8I945GMF supports the Dual Channel Technology. After operating the Dual Channel Technology, the bandwidth of Memory Bus will double. GA-8I945GMF includes 4 DIMM sockets, and each Channel has two DIMM sockets as following: Channel A : DDR II 1, DDR II 2 Channel B : DDR II 3, DDR II 4 If you want to operate the Dual Channel Technology, please note the following explanations due to the limitation of Intel chipset specifications. 1. Dual channel memory cannot be used if one or three DDR II memory modules are installed. 2. If two DDR II memory modules are installed (same storage capacity), one must be added to the Channel A slot and the other in the Channel B slot in order to use dual channel memory. Dual channel memory cannot function if both DDR II memory modules are installed on the same channel. 3. If four DDR II 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 II memory modules. We'll strongly recommend our user to slot two DDR II memory modules into the DIMMs with the same color in order for Dual Channel Technology to work. The following table is for Dual Channel Technology combination: (DS: Double Side, SS: Single Side) 2 memory modules 4 memory modules DDR II 1 DS/SS X DS/SS DDR II 2 X DS/SS DS/SS DDR II 3 DS/SS X DS/SS DDR II 4 X DS/SS DS/SS - 15 - Hardware Installation