SGI Rackable C1000 Guía de usuario Pagina 61

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Installing Memory
007-5688-001 39
Mixing Processors and DIMM Speeds
The Nehalem-EP processor is rated for the maximum DIMM speed that it will support.
Configuring memory DIMMs that have a DIMM speed that is greater than the processors
capability to support will result in the memory DIMM running at the maximum speed of the
processor - not the maximum speed of the DIMM. See the following table:
Three conditions must be met to have a memory speed of 1333 MT/s:
The processor must be capable of supporting 1333 MT/2
The DIMM must be capable of running at 1333 MT/s
Only one DIMM is placed on each channel.
Placing three DIMMs on the channel will cause the DIMMs to run at 800 MT/s.
Processor Memory DIMM
Actual Memory
DIMM Speed
1066 MT/s capable CPUs:
LSX-CPU-L5520
LSX-CPU-E5520
LSX-CPU-E5530
LSX-CPU-E5540
LSX-MEM-2G-1066
LSX-MEM-4G-1066
LSX-MEM-8G-1066
1066 MT/s
(Based on 1 or 2 DIMMs
per channel)
1066 MT/s capable CPUs:
LSX-CPU-L5520
LSX-CPU-E5520
LSX-CPU-E5530
LSX-CPU-E5540
LSX-MEM-2G-1333
LSX-MEM-4G-1333
LSX-MEM-8G-1333
1066 MT/s
(Based on 1 or 2 DIMMs
per channel)
1333 MT/s capable CPUs:
LSX-CPU-L5550
LSX-CPU-E5560
LSX-CPU-E5570
LSX-MEM-2G-1066
LSX-MEM-4G-1066
LSX-MEM-8G-1066
1066 MT/s
(Based on 1 or 2 DIMMs
per channel)
1333 MT/s capable CPUs:
LSX-CPU-L5550
LSX-CPU-E5560
LSX-CPU-E5570
LSX-MEM-2G-1333
LSX-MEM-4G-1333
LSX-MEM-8G-1333
1333 MT/s
(Based on 1 DIMM per
channel)
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