AMD SB750, 790GX Install Memory, Valid Memory Configurations Bank Pin Dimm, Total Memory

2-4 Install Memory

This motherboard provides four 240-pin DDR2 DUAL INLINE MEMORY MODULES (DIMM) socket for DDR2 memory expansion available from minimum memory volume of 128MB to maximum memory volume of 8GB DDRII SDRAM.

Valid Memory Configurations

Bank		240-Pin DIMM	PCS	Total Memory
Bank 0, 1	(DIMM1)	DDR2 667/DDR2 800/DDR2 1066	X1	128MB∼2GB
Bank 2, 3	(DIMM2)	DDR2 667/DDR2 800/DDR2 1066	X1	128MB∼2GB
Bank 4, 5	(DIMM3)	DDR2 667/DDR2 800/DDR2 1066	X1	128MB∼2GB
Bank 6, 7	(DIMM3)	DDR2 667/DDR2 800/DDR2 1066	X1	128MB∼2GB
Total		System Memory (Max 8GB)	4	128MB∼8GB

Dual channel Limited!

1.Dual channel function only supports when 2 DIMM Modules plug in either both DIMM1 & DIMM2or DIMM3 &DIMM4, or four DIMM Modules plug in DIMM1~DIMM4.

2.DIMM1 & DIMM2, or DIMM3& DIMM4 must be the same type, same size, same frequency for dual channel function.

Install DDR SDRAM modules to your motherboard is not difficult, you can refer to figure below to see how to install a 240-Pin DDRII533/DDR2 667/DDR2 800/DDR2 1066SDRAM module.

DIMM3 & DIMM4: Dual Channel 2

DIMM1 (BANK0+BANK1)

DIMM2 (BANK2+BANK3)

DIMM3 (BANK4+BANK5)

DIMM4 (BANK6+BANK7)

DIMM1 & DIMM2: Dual Channel 1

Graph 2-4

NOTE! When you install DIMM module fully into the DIMM socket the eject tab should be locked into the DIMM module very firmly and fit into its indention on both sides.

WARNING! For the DDR SDRAM CLOCK is set at 400MHz, use only DDR2 800- compliant DDR2 Modules. When this motherboard operate at 400Mhz, most system will not even boot if non-compliant modules are used because of the strict timing issues, if your DDR Modules are not DDR2 800-compliant, set the SDRAM clock to 200MHz to ensure system stability.

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