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3. HARDWARE SETUP

NOTE: No hardware or BIOS setup is required after adding or removing memory.

This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are
available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM) of 16, 32, 64, 128MB, 256 or 512MB. to form a memory size
between 16MB and 1.5GB. One side (with memory chips) of the DIMM takes up one
row on the motherboard. This motherboard also supports NEC’s Virtual Channel (VC)
SDRAMs.

To use the chipset’s Error Checking and Correction (ECC) feature, you must use a
DIMM with 9 chips per side (standard 8 chips/side + 1 ECC chip).

Memory speed setup is recommended through Configure SDRAM Timing by SPD
(see Advanced Chipset Setup, BIOS).

•

For optimum signal integrity, inserting the DIMMs in the following order is
recommended: DIMM1, DIMM2, DIMM3.

•

SDRAMs used must be compatible with the current PC133/PC100/VC133/
VC100 SDRAM specification.

•

DO NOT attempt to mix SDRAMs with VCM SDRAMs.

DIMM1 (Rows 0&1)

SDRAM 16, 32, 64, 128, 256, 512MB

x1

DIMM2 (Rows 2&3)

SDRAM 16, 32, 64, 128, 256, 512MB

x1

DIMM3 (Rows 4&5)

SDRAM 16, 32, 64, 128, 256, 512MB

x1

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3.5.1 General DIMM Notes

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For the system CPU bus to operate at 133MHz, use only PC133/VC133-com-
pliant DIMMs. When this motherboard operates at 133MHz, most system will
not even boot if non-compliant modules are used because of the strict timing is-
sues involved under this speed. If your DIMMs are not PC133/VC133-compliant,
set the CPU bus frequency to 100MHz RAM to ensure system stability.

•

This motherboard supports SPD (Serial Presence Detect) DIMMs. This is the
memory of choice for best performance vs. stability.

•

This motherboard does NOT support registered memory.

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BIOS shows SDRAM memory on bootup screen.

•

Single-sided DIMMs come in 16, 32, 64,128, 256MB; double-sided come in 32,
64, 128, 256, 512MB.

System Memory