Memory - SOYO SY-K7AIA User Manual

Motherboard Description

1-8 MEMORY

1-8.1 Main Memory
The motherboard has four DIMM sockets. SDRAM can be installed in one,
two, three, or four sockets. Using the serial presence detect (SPD) data
structure, programmed into an E²PROM on the DIMM, the BIOS can
determine the SDRAM's size and speed. Minimum DIMM memory size is
8 MB; maximum DIMM memory size is 256MB. Memory size and speed
can vary between sockets.
The motherboard supports the following memory features:
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168-pin DIMMs with gold-plated contacts
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66/100/133 MHz SDRAM
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Non-ECC (64-bit) and ECC (72-bit) memory
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3.3V memory only
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Supports 8/16/32/64/128/256 MB DIMM Modules
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Supports unbuffered single- or double-sided DIMMs
1-8.2 SDRAM
SDRAM improves memory performance through memory access that is
synchronous with the front-side bus clock. Burst transfer rates at x-1-1-1
timing can be achieved using SDRAM, while asynchronous memory
subsystem are typically limited at x-2-2-2 transfer rates.
Note
All memory components and DIMMs used with the SY-K7AIA
motherboard must comply with the PC SDRAM specifications. These
include: the PC SDRAM Specification (memory component specific), the
PC Unbuffered DIMM Specification, and the PC Serial Presence Detect
Specification.
1-8.3 ECC Memory
ECC memory detects multiple-bit errors and corrects single-bit errors.
When ECC memory is installed, the BIOS supports both ECC and non-
ECC mode. ECC mode is enabled in the Setup program. The BIOS
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SY-K7AIA