HP dx7300 Technical Reference Manual page 49

These systems support DIMMs with the following parameters:
■
Unbuffered, compatible with SPD rev. 1.0
■
256-Mb, 512-Mb, and 1-Gb memory technologies for x8 and x16 devices
■
CAS latency (CL) of 5 or 6 (depending on memory speed)
■
Single or double-sided
■
Non-ECC memory only
The SPD format supported by these systems complies with the JEDEC specification for 128-byte
EEPROMs. This system also provides support for 256-byte EEPROMs to include additional
HP-added features such as part number and serial number. The SPD format as supported in this
system (SPD rev. 1) is shown in Table 3-1.
If BIOS detects an unsupported DIMM, a "memory incompatible" message will be displayed
and the system will halt. These systems are shipped with non-ECC DIMMs only. Refer to
chapter 8 for a description of the BIOS procedure of interrogating DIMMs.
An installed mix of DIMM types is acceptable but operation will be constrained to the level of
the DIMM with the lowest (slowest) performance specification.
If an incompatible DIMM is detected the NUM LOCK will blink for a short period of time
during POST and an error message may or may not be displayed before the system hangs.
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Processor/Memory Subsystem
3-5