Supermicro C7Q67-O User Manual download pdf (Page 33)

Chapter 2: Installation

2-9

Memory Support

The C7Q67 supports up to 32GB of Unbuffered (UDIMM) DDR3 Non-ECC

1333/1066 MHz in 4 memory slots. Populating these DIMM modules with a pair of

memory modules of the same t ype and same size will result in interleaved memory,

which will improve memory performance. Please refer to the table below:

Memory Population Guidelines

Please follow the table below when populating the C7Q67.

DDR3 Unbuffered Non-ECC (UDIMM) Memory

DIMM Slots per

Channel

DIMMs Populat-

ed per Channel

DIMM Type POR Speeds Ranks per DIMM (any

combination)

2 1 Unbuffered

DDR3

1066, 1333 Single Rank, Dual Rank

2 2 Unbuffered

DDR3

1066, 1333 Single Rank, Dual Rank

Notes

Due to memory allocation to system devices, the amount of memory that •

remains available for operational use will be reduced when 4 GB of RAM

is used. The reduction in memory availability is disproportional. See the

following table for details.

For Microsoft Windows users: Microsoft implemented a design change in the •

Windows XP with Service Pack 2 (SP2) and Windows Vista. This change is

specic to the behavior of Physical Address Extension (PAE) mode which

improves driver compatibility. For more information, please read the following

article at Microsoft’s Knowledge Base website at: http://support.microsoft.

com/kb/888137.

Slot A, Channel 2

(Blue Slot)

Slot B, Channel 2

Slot B, Channel 1

Slot A, Channel 1

(Blue Slot)

Towards the edge of the motherboard

Towards the CPU

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Supermicro C7Q67-O User Manual Page 33