Asus AW1500-I5 - Manual (Page 35)

ASUS PP-DLW motherboard user guide 2-9
2.5.2 Memory Configurations
You may install 64MB, 128MB, 256MB, 512MB, 1GB, or 2GB Double Data
Rate (DDR) DIMMs into the four DIMM sockets using the memory
configurations presented in this section.
Important notes on memory configurations
1. Installing DDR DIMMs other than the recommended configurations
may cause memory sizing error or system boot failure. See Table 1
for the recommended configurations.
2. Install only identical (the same type and size) DDR DIMM pairs
using the recommended configurations.
3. Make sure that the memory frequency matches the CPU FSB
(Front Side Bus). Refer to Table 2 below.
4. DO NOT mix unbuffered and registered DIMMs in any
configuration.
Table 1 Recommended memory configurations
Table 2 Memory frequency/CPU FSB synchronization
Sockets
Mode DDR1 DDR2 DDR3 DDR4
Single-channel (1) Module A — — —
(2) — — Module A —
(3) Module A — Module A —
(4) Module A — Module B —
Dual-channel (1) Module A Module A — —
(2) — — Module A Module A
(3) Module A Module A Module A Module A
(4) Module A Module A Module B Module B
CPU FSB DDR DIMM Type Memory Frequency
533 MHz PC2100 266 MHz
400 MHz PC1600 200 MHz