User Guide

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Hardware Installation

2-25

Warning: Do not install any SIMM that contains more than

24 chips. SIMMs contain more than 24 chips exceed the

INTEL chipset driving specification. Doing so may result in

unstable system behavior.

Warning: Although Intel TX chipset supports x4 SDRAM

chip. Due to loading issue, it is not recommended to use

this kind of SDRAM.

Tip: The SIMM/DIMM chip count can be calculated by

following example:

For 32 bit non-parity SIMM using 1M by 4 bit DRAM

chip, 32/4=8 chips.

For 36 bit parity SIMM using 1M by 4 bit DRAM chip,

36/4=9 chips.

For 36 bit parity SIMM using 1M by 4 bit and 1M by 1

bit DRAM, the chip count will be 8 data chips(8= 32/4)

plus 4 parity chips(4=4/1), total is 12 chips.

For 64 bit DIMM using 1M by 16 bit SDRAM, the chip

count is 64/16=4 chips.

Following table list the recommended DRAM combinations of SIMM and DIMM:

SIMM

Data chip

SIMM

Parity chip

Bit size

per side

Single/

Double

side

Chip

count

SIMM

size

Recommended

1M by 4 None 1Mx32 x1 8 4MB Yes

1M by 4 None 1Mx32 x2 16 8MB Yes

1M by 4 1M by 1 1Mx36 x1 12 4MB Yes

1M by 4 1M by 4 1Mx36 x1 9 4MB Yes

1M by 4 1M by 4 1Mx36 x2 18 8MB Yes

1M by 16 None 1Mx32 x1 2 4MB Yes

1M by 16 None 1Mx32 x2 4 8MB Yes

1M by 16 1M by 4 1Mx36 x1 3 4MB Yes

1M by 16 1M by 4 1Mx36 x2 6 8MB Yes

4M by 4 None 4Mx32 x1 8 16MB Yes

4M by 4 None 4Mx32 x2 16 32MB Yes

4M by 4 4M by 1 4Mx36 x1 12 16MB Yes

4M by 4 4M by 1 4Mx36 x2 24 32MB Yes