User guide

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Chapter 2: Hardware information

Table 1 Recommended memory configurations

Table 2 Memory frequency/CPU FSB synchronization

* Use only identical DDR DIMM pairs.

Sockets

Mode DIMM_A1 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

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.

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

• install identical DIMMs in all four sockets

• install identical DIMM pair in DIMM_A1 and DIMM_B1 (blue sockets)

and identical DIMM pair in DIMM_A2 and DIMM_B2 (black sockets)