Memory Population Rules

The workstation contains six DIMM slots divided into three channels (two slots per channel). The slots are color-coded (three blue and three black) and are numbered from DIMM 0 (closest to the CPU) to DIMM 5 (farthest from the CPU).

Populate the slots according to the following rules:

• The workstation requires DDR3-1066/1333, unbuffered, ECC DIMMs.

• Supported sizes and frequencies: 1 GB and 2 GB 1066 MHz and 1333 MHz DIMMs (see the Sun Ultra 27 Workstation Product Notes for supported hardware and other workstation-related issues.)

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  Note –

  The DDR3 interface can support up to six DDR3–1066 DIMMs running at full speed.

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• DIMMs must be installed in groups of three except the single DIMM configuration.

• Three 1333 MHz DIMMs will run at 1333 MHz. Six 1333 MHz DIMMs will run at 1066 MHz.

• Populate DIMMs according to the supported memory configurations listed in the following section.