This system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset architectural configuration. The following are the recommended guidelines for best performance:
The Dell Precision Rack 7910 uses the all-new DDR4 RAM. These are some of the advantages of DDR4 RAM:
The Dell Precision™ Rack 7910 supports DDR4 registered DIMMs (RDIMMs), and load-reduced DIMMs (LRDIMMs).
Memory bus operating frequency can be 1333 MT/s, 1600 MT/s, 1866 MT/s, or 2133 MT/s depending on:
The system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is organized into four channels. In each channel, the release levers of the first socket are marked white, the second socket black, and the third socket green.
(Figure.1 Memory Channels)
Memory channels are organized as follows:
Processor | Memory Channels |
---|---|
Processor 1 | Channel 0: slots A1, A5, and A9 |
Channel 1: slots A2, A6, and A10 | |
Channel 2: slots A3, A7, and A11 | |
Channel 3: slots A4, A8, and A12 | |
Processor 2 | Channel 0: slots B1, B5, and B9 |
Channel 1: slots B2, B6, and B10 | |
Channel 2: slots B3, B7, and B11 | |
Channel 3: slots B4, B8, and B12 |
The following table shows the memory populations and operating frequencies for the supported configurations:
Memory Populations and Operating Frequencies | |||
---|---|---|---|
DIMM Type | DIMMs Populated/Channel | Operating Frequency (in MT/s) | Maximum DIMM Rank/Channel |
RDIMM | 1 | 2133, 1866, 1600, 1333 | Dual rank or single rank |
2 | 2133, 1866, 1600, 1333 | Dual rank or single rank | |
3 | 1866, 1600, 1333 | Dual rank or single rank | |
LRDIMM | 1 | 2133, 1866, 1600, 1333 | Quad Rank |
2 | 2133, 1866, 1600, 1333 | Quad Rank | |
3 | 1866, 1600, 1333 | Quad Rank |
The following table shows the Memory specifications for the Precision Rack 7910 Fixed Workstation:
Memory | |
---|---|
Type | 1333 MT/s, 1600 MT/s, 1866 MT/s, or 2133 MT/s DDR4 registered, load-reduced Error Correcting Code (ECC) DIMMs |
Support for advanced ECC or memory-optimized operation | |
Speed | 1866 MHz, 2133 MHz, or 1600 MHz |
Memory Module Sockets | Twenty-four 288-pin |
Capacity | 2 GB, 4 GB, 8 GB, and 16 GB |
LRDIMMs | 32 GB quad-ranked |
RDIMMs | 4 GB single-ranked; 8 GB or 16 GB dual-ranked |
Minimum Memory | 4 GB with a single processor |
8 GB with a dual processor (minimum one DIMM module per processor) | |
Maximum Memory (LRDIMMs) | Up to 768 GB with a dual processor |
Up to 256 GB with a single processor |
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