Asus P4P8X User Manual page 25

Table 1 Recommended memory configurations
Mode
Single-channel
Dual-channel
* 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)
Table 2 Memory frequency/CPU FSB synchronization
This motherboard supports different memory frequencies depending on the CPU
FSB (Front Side Bus) and the type of DDR DIMM.
CPU FSB
800 MHz
533 MHz
400 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.
ASUS P4P8X motherboard user guide
DIMM_A1 DIMM_A2
(blue) (black)
(1) Populated
(2) — Populated
(3) —
(4) —
(1) Populated
Populated
(2) —
(3)* Populated Populated Populated Populated
DDR DIMM Type
PC3200
PC2700/PC2100
PC2100
Sockets
DIMM_B1 DIMM_B2
(blue) (black)
— —
—
— Populated
— — Populated
Populated
—
Populated
—
Memory Frequency
400 MHz
333/266 MHz
266 MHz
—
—
—
—
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