Supermicro X7DCX Bedienungsanleitung PDF herunterladen (Seite 30)

2-8

X7DCX User's Manual

2-4 Installing DIMMs

CAUTION

Exercise extreme care when installing or removing DIMM

modules to prevent any possible damage. Also note that the

memory is interleaved to improve performance..

DIMM Installation

Insert the desired number of DIMMs into the memory slots, starting with 1.

DIMM #1A. The memory scheme is interleaved, so you must install two mod-

ules at a time, beginning with DIMM 1A, DIMM 1B, then DIMM 2A, DIMM 2B,

and DIMM 3A, DIMM 3B.

Insert each DIMM module vertically into its slot. Gently press down on the 2.

DIMM module until it snaps into place in the slot. Repeat for all modules. Pay

attention to the notch along the bottom of the module to prevent inserting the

DIMM module incorrectly.

This motherboard supports both dual-rank and single-rank memory modules. 3.

For system memory to work properly, please use all dual-rank memory mod-

ules or use all single-rank memory modules on the same motherboard. Check

the Supermicro web site for other information.

Memory Support

The X7DCX supports up to 48 GB Buffered (Registered) ECC DDR2 667/533 MHz

in 6 DIMMs. Populating memory slots of the same bank with a pair (or pairs) of

memory modules of the same size and same type will result in two-way Inter-

leaved Memory which will improve memory performance. (See the table below.)

Note 1: Due to OS limitations, some operating systems may not show

more than 4 GB of memory.

Note 2: Due to memory allocation to system devices, memory remaining

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.)

Optimized DIMM Population Configurations

No. of

DIMMs

2DIMMs DIMM1A ------ ------ DIMM1B ------ ------

4DIMMs DIMM1A DIMM2A ------ DIMM1B DIMM2B ------

6DIMMs DIMM1A DIMM2A DIMM3A DIMM2A DIMM2B DIMM3B

(Notes: i. DIMM slot# specified: DIMM slot to be populated; “---“: DIMM slot not to be

populated. ii. Both 533 MHz and 667MHz DIMMs are supported; however, you need to use

the memory modules of the same speed and of the same type on a motherboard. iii. For

memory to work properly, you need to follow the restrictions listed above. )

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