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Topic Title: Memory IC Configuration
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Created On: 09/14/2004 01:57 PM
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 09/14/2004 01:57 PM
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What Memory IC Configuration can the Opteron support? I know some Intel Chipsets will not support 1Gb (i.e. 128x8 or 256x4) ICs, will the Opteron support these?

 09/14/2004 06:41 PM
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According to the AMD Functional Data Sheet, 940 Pin Package' "> :

Table 3 on page 15 lists the maximum memory sizes per chip-select for the various supported DRAM device configurations. Note that for DIMMs using two chip-selects, the total memory size per DIMM is doubled. Refer to the AMD Athlon™ 64 FX and AMD Opteron™ Processor Motherboard Design Guide, order# 25180, for details on the connection scheme for registered DIMMs.

Table 3.  Total Memory Sizes Per Chip Select

Devices Used on DIMMs                Size Per CS
64 M-bit (4M x4-bits x4 banks)      128 Mbyte
64 M-bit (2M x8-bits x4 banks)        64 Mbyte
64 M-bit (1M x16-bits x4 banks)      32 Mbyte
128 M-bit (8M x4-bits x4 banks)    256 Mbyte
128 M-bit (4M x8-bits x4 banks)    128 Mbyte
128 M-bit (2M x16-bits x4 banks)    64 Mbyte
256 M-bit (16M x4-bits x4 banks)    512 Mbyte
256 M-bit (8M x8-bits x4 banks)      256 Mbyte
256 M-bit (4M x16-bits x4 banks)    128 Mbyte
512 M-bit (32M x4-bits x4 banks)        1 Gbyte
512 M-bit (16M x8-bits x4 banks)    512 Mbyte
512 M-bit (8M x16-bits x4 banks)    256 Mbyte
1 G-bit (64M x4-bits x4 banks)            2 Gbyte
1 G-bit (32M x8-bits x4 banks)            1 Gbyte
1 G-bit (16M x16-bits x4 banks)      512 Mbyte

(Note: The Motherboard Design Guide is not publicly available, AFIK)

You can also browse some AMD Opteron™ Processor Compatible DDR Memory Modules' ">^9394,00.html
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