HP Z840 Workstation - Memory features; ECC; Command and Address parity; Optimize performance

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Technical white paper | HP Z840 Workstation
Memory features
ECC is supported on all of our supported DIMMs
• Single-bit errors are automatically corrected.
• Multi-bit errors are detected and will cause the system to immediately reboot and halt with an F1 prompt error message.
• Non-ECC memory does not detect or correct single-bit or multi-bit errors which can cause instability, or corruption of
data, in the platform. See Memory Technology White Paper for more information.
Command and Address parity is supported
• Command and Address errors are detected and will cause the system to immediately reboot and halt with an F1 prompt
error message.
Optimize performance
Generally, maximum memory performance is achieved by evenly distributing total desired memory capacity across all
operational channels. Proper individual DIMM capacity selection is essential to maximizing performance. Refer to Optimal
congurations table below for more information.
Table 4: Optimal congurations for the HP Z840 (Note: The following table does not include all available orderable congurations)
Notes DIMM1 DIMM2 DIMM3
CPU0
DIMM4 DIMM5 DIMM6 DIMM7 DIMM8 Rating
4 GB * 4 GB Fair
8 GB 4 GB
8 GB
4 GB Good
Fair
12 GB 4GB 4GB 4GB Better
16 GB 4 GB
8 GB
4 GB 4 GB 4 GB
8 GB
Best
Good
32 GB 4 GB
8 GB
16 GB
4 GB 4 GB
8 GB
4 GB 4 GB 4 GB
8 GB
4 GB 4 GB
8 GB
16 GB
Best
Best
Good
48 GB ~ 8GB 4GB 8GB 4GB 4GB 8GB 4GB 8GB Best
64 GB 8 GB
16 GB
8 GB 8 GB
16 GB
8 GB 8 GB 8 GB
16 GB
8 GB 8 GB
16 GB
Best
Best
96 GB ~ 16GB 8GB 16GB 8GB 8GB 16GB 8GB 16GB Best
128 GB 16 GB
32 GB
16 GB 16 GB
32 GB
16 GB 16GB 16 GB
32 GB
16 GB 16 GB
32 GB
Best
Best
256 GB ~ 32 GB
64 GB
32 GB 32 GB
64 GB
32 GB 32 GB 32 GB
64 GB
32 GB 32 GB
64 GB
Best
Best
512 GB ~
~
64 GB
128 GB
64 GB 64 GB
128 GB
64 GB 64 GB 64 GB
128 GB
64 GB 64 GB
128 GB
Best
Best
1 TB ~ 128 GB 128 GB 128 GB 128 GB 128 GB 128 GB 128 GB 128 GB Best
* Maximum memory capacities assume Windows 64-bit operating systems or Linux. With Windows 32-bit operating systems, memory above 3 GB may
not all be available due to system resource requirements.
~ Although supported, these congurations are not orderable at this time.