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2-5 Main Memory Configuration
The DRAM memory system consists two banks and the memory size ranges from
16~256 MBytes. If you only use one bank it does not matter which one you use and
if you use two or more banks, it does not matter which bank you install first.
DRAM Specifications
DIMM type:
Module size:
DRAM speed:
Parity:
The compatibility of 256MB DIMM is still under testing and cannot be
guaranteed.
This mainboard supports 3.3v, unbuffered, 4-clock, SDRAM DIMM only.
Buffered, 5V, or 2-clock SDRAM DIMMs should not be used.
Due to loading anomalies, using DIMM with an 'n x 4' DRAM base on this
mainboard is not recommended. For example, a DIMM that uses sixteen
16Mb x 4 devices should not be used.
SPD (Serial Presence Detect)
This is an EPROM that contains speed and design information about the memory
module. The mainboard queries the module and makes adjustments to system
operation based on what it finds.
ECC DRAM Capability
This mainboard can be configured to support ECC (Error Check and Correct)
function when utilizing parity DIMM modules. To utilize the chipset's ECC features,
you must use a 72-bit DIMM module.These modules are automatically detected during
bootup. However, the user must configure the DRAM Data Integrity Mode to "ECC"
in BIOS's SeePU&Chipset Features Setup menu to enable the ECC function. ECC
detects double bit errors and detects and corrects single bit memory errors on the
fly without user intervention. Errors may be generated by a defective memory module,
conflicting memory speeds between different banks, DMA, etc.
3.3V, 64/72-bit Synchronous DRAM
Single/double-sided 16/32/64/128 MBytes
10/12ns for Synchronous DRAM
Either parity or non-parity
Hardware Setup
17
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