DFI SB630-CRM User Manual download pdf (Page 18)

Hardware Installation

DIMMs are on the same channel.

DIMMs in a channel can be identical or com-

pletely different. However, we highly recommend

using identical DIMMs.

Not all slots need to be populated.

DIMMs of the same memory conﬁ guration are

on different channels.

Single Channel

Dual Channel

The system board supports the following memory interface.

Single Channel (SC)

Data will be accessed in chunks of 64 bits (8B) from the memory channels.

Dual Channel (DC)

Data will be accessed in chunks of 128 bits from the memory channels. Dual

channel provides better system performance because it doubles the data transfer

rate.

Important:

1. You can populate either Channel A or Channel B ﬁ rst.

2. When installing a DIMM in Channel A or Channel B, always populate

the socket that is farthest the CPU. In this case, it will mean popu-

lating DDR3-2 and/or DDR3-4 ﬁ rst.

3. If you intend to use dual channel, the same rule applies - always

the socket farthest the CPU. Populate DDR3-2 and/or DDR3-4 ﬁ rst;

not DDR3-2 and DDR3-3 and not DDR3-1 and DDR3-4.

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DFI SB630-CRM User Manual Page 18