Supported DIMM configurations
The HP xw6600 Workstation supports the following memory module configurations:
● HP certified DDR2-667, Fully Buffered DIMMs (FBD), 72-bit ECC
● Eight DIMM slots
● 32 GB maximum configuration with 4-GB DIMMs
● Configurable for Single Channel (one DIMM), Dual Channel (two DIMMs), or Quad Channel (four
to eight DIMMs)
● No support for mirroring
● No spare DIMM support
HP ships only DIMMs that are electrically and thermally compatible with this workstation. Because third-
party DIMMs might not be electrically or thermally compatible, they are not supported by HP.
● To prevent possible damage to equipment or loss of data, ensure that the keyway cut into the
bottom edge of each DIMM is aligned with the corresponding socket key as each DIMM is installed.
● Use only HP certified and warranted, PC2–5300F, 667 MHz fully buffered DIMMs.
● If multiple DIMMs are installed in a workstation, they must be installed in matched pairs of the same
size in each channel.
When powered on, the workstation BIOS validates the installed memory configuration. If the memory
configuration is invalid, the BIOS generates one of the following error scenarios:
● If the BIOS cannot obtain a valid memory configuration by disabling some of the installed memory,
the BIOS halts the boot process with a diagnostics 2006 code for memory error (five beeps and
blinks).
● If the BIOS can find a valid memory configuration by disabling plugged-in memory, it does so and
reports a warning during POST. The system can still be booted.