User Guide

2-16 Chapter 2
° Installing System Memory ¡i DRAM Memory ¡j
When this mainboard was designed, we not only took into account present
needs, but we also tried to address demands for future upgrades, IT5A support
two168 pin DIMM sockets:
Before you proceed with installation, be patient, first read what follows:
1. Factory default setting of the mainboard is for 60ns DRAM modules.
If your memory modules are faster than 60ns, say 45ns, you can modify
the BIOS settings in order to speed up the operating speed of the system.
But if you don’t want to modify these settings, or if you don’t know how
to modify them, it’s no big deal.
But if you set the external CPU clock at 66MHz or more, we recommend
you use 60ns or even faster DRAM modules.
2. Maximum memory capacity 256M bytes supported by this
mainboard.
168-pin DIMM modules are 64 bit, so you can use single modules.
On the IT5A mainboard, these modules can support EDO and
Synchronous DRAM memory configurations.
When you install DIMM modules on the mainboard, you don’t have to setup
anything, just be sure that you use 3.3V unbuffered 168-pin DIMM modules, and
insert them in the memory socket.