Table 1

Recommended memory configurations

 

 

 

 

 

 

 

 

 

 

Mode

 

 

DIMM_A1

 

Sockets

 

 

 

 

 

DIMM_A2 DIMM_B1 DIMM_B2

 

 

 

 

 

 

 

 

 

 

Single-channel

(1)

Populated

 

 

 

 

 

(2)

Populated

 

 

 

 

(3)

Populated

 

 

 

 

(4)

 

Populated

 

Dual-channel*

(1)

Populated

 

Populated

 

 

 

(2)

Populated

 

Populated

 

 

 

(3)

Populated

Populated

Populated

Populated

 

 

 

 

 

 

 

 

 

 

*Use only identical DDR DIMM pairs.

*For dual-channel configuration (3), you may:

install identical DIMMs in all four sockets or

install identical DIMM pair in DIMM_A1 and DIMM_B1 (blue sockets) and identical DIMM pair in DIMM_A2 and DIMM_B2 (black sockets)

Table 2

Memory frequency/CPU FSB synchronization

 

 

 

 

 

CPU FSB

DDR DIMM Type

Memory Frequency

 

 

 

 

 

 

800 MHz

 

PC3200/PC2700*/PC2100

400/333*/266 MHz

 

 

 

 

 

 

533 MHz

 

PC2700/PC2100

333/266 MHz

 

 

 

 

 

 

400 MHz

 

PC2100

266 MHz

 

 

 

 

 

• *When using 800MHz CPU FSB, PC2700 DDR DIMMs may run only at 320MHz (not 333MHz) due to chipset limitation.

The following FSB/DDR ratios are not supported: 400/333, 400/400, 533/400.

FSB/DDR setting 800/333 is recognized as FSB/DDR 800/320.

2-12

Chapter 2: Hardware information