Asus AP1720-E1 - Manual (Page 38)

2-12 Chapter 2: Hardware information
Obtain DDR DIMMs only from ASUS qualified vendors for better
system performance. Visit the ASUS website (www.asus.com) for the
latest QVL.
Table 1 Recommended memory configurations
* 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)
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 2 Memory frequency/CPU FSB synchronization
CPU FSB DDR DIMM Type Memory Frequency
533 MHz PC2700/PC2100 333/266 MHz
400 MHz PC2100 266 MHz