Dell PowerEdge FC830 - Mode-Specific Guidelines

• Populate the sockets by highest capacity DIMM in the following order - first in sockets with white
release levers and then black. For example, if you want to mix 16 GB and 8 GB DIMMs, populate 16 GB
DIMMs in the sockets with white release tabs and 8 GB DIMMs in the sockets with black release tabs.
• In a dual-processor configuration, the memory configuration for each processor must be identical.
For example, if you populate socket A1 for processor 1, then populate socket B1 for processor 2, and
so on.
• Memory modules of different sizes can be mixed provided that other memory population rules are
followed (for example, 4 GB and 8 GB memory modules can be mixed).
• Depending on mode-specific guidelines, populate four DIMMs per processor (one DIMM per channel)
at a time to maximize performance. For more information, see the Mode-specific guidelines section.
Table 21. Heat sink — processor configurations
Processor
Configuration
Processor Type (in
Watts)
Heat
Sink
Width
Number of DIMMs
Maximum System
Capacity
Reliability, Availability,
and Serviceability (RAS)
Features
Dual processor Up to 105 W, 120 W,
or 135 W
74
mm
24 24
Quad processor Up to 105 W, 120 W,
or 135 W
74
mm
48 48
NOTE: If you are using a 1.8-inch hard drive/SSD system with four processors,
ensure that you use only 74 mm wide heat sinks for processors up to 105 W,
120 W, or 135 W.
Up to 120 W or 135 W 94
mm
40 (Three DIMMs in
channel 0 and channel
2 and two DIMMs in
channel 1 and channel
3)
32 (Two DIMMs per
channel)
NOTE: If you are using a 2.5-inch hard drive/SSD system with four processors,
ensure that you use only 94 mm wide heat sinks for processors up to 120 W or
135 W.
NOTE: When using a 94 mm wide heat sink for quad processors, the memory
module sockets A10, A12, B10, B12, C10, C12, D10, and D12 are not available for
population.
Related Links
Mode-specific guidelines
Mode-specific guidelines
Four memory channels are allocated to each processor. The allowable configurations depend on the
memory mode selected.
Advanced Error Correction Code (lockstep)
Advanced Error Correction Code (ECC) mode extends SDDC from x4 DRAM based DIMMs to both x4 and
x8 DRAMs. This protects against single DRAM chip failures during normal operation.
The installation guidelines for memory modules are as follows:
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