Asus P4P8X User's Guide download pdf (Page 25)

ASUS P4P8X motherboard user guide

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This motherboard supports different memory frequencies depending on the CPU

FSB (Front Side Bus) and the type of DDR DIMM.

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

• install identical DIMMs in all four sockets, or

• install identical DIMMs in DIMM_A1 and DIMM_B1 (blue sockets)

and identical DIMMs in DIMM_A2 and DIMM_B2 (black sockets)

Sockets

Mode DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2

(blue) (black) (blue) (black)

Single-channel (1) Populated — — —

(2) — Populated — —

(3) — — Populated —

(4) — — — Populated

Dual-channel (1) Populated

— Populated —

(2) —

Populated — Populated

(3)* Populated Populated Populated Populated

Table 1 Recommended memory configurations

Table 2 Memory frequency/CPU FSB synchronization

CPU FSB DDR DIMM Type Memory Frequency

800 MHz PC3200 400 MHz

533 MHz PC2700/PC2100 333/266 MHz

400 MHz PC2100 266 MHz

• When overclocking to 800MHz CPU FSB, the system supports only

DDR400 (PC3200) DIMMs due to chipset limitation.

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

533/400.

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Asus P4P8X User's Guide Page 25