Installing Memory Modules (Dimm) - ASROCK B650 PG LIGHTNING User Manual

2.3 Installing Memory Modules (DIMM)

This motherboard provides four 288-pin DDR5 (Double Data Rate 5) DIMM slots,
and supports Dual Channel Memory Technology.
1. For dual channel configuration, you always need to install identical (the same brand,
speed, size and chip-type) DDR5 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with only one or three memory
module installed.
3. It is not allowed to install a DDR, DDR2 , DDR3 or DDR4 memory module into a DDR5
slot; otherwise, this motherboard and DIMM may be damaged.
4. The DIMM only fits in one correct orientation. It will cause permanent damage to the
motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.
Recommended Memory Configuration
1 DIMM
A1
2 DIMMs
A1
4 DIMMs
A1
V
The first boot may take some time.
Please be patient and refer to the following table for booting time.
*It may vary by different setups.
Memory
2 x 16GB
2 x 32GB
4 x 16GB
4 x 32GB
28
A2
A2
V
A2
V
1st boot after clear CMOS
90 sec
150 sec
170 sec
315 sec
B1 B2
V
B1 B2
V
B1 B2
V V