Abit IT5E Series, Руководство пользователя, Страница: 28 / 98

2-16 Chapter 2
IT5V: No support. Since the Intel 430VX chipset does not
support this feature, since the memory error check and
correction feature may not be effective, and since you
cannot easily find memory modules with memory check
and correction feature, this mainboard does not support
it.
IT5H: Support. In a server or network environment, demands
regarding system stability and data security are higher,
that is why these systems have to rely on hardware
security supported by software, and that is also the
reason why this mainboard features automatic memory
error check and correction.
3. Maximum memory capacity supported by this mainboard.
IT5V: 128M Bytes. It is the upper limit supported by the 430 VX
chipset.
IT5H: 512M Bytes. It is the upper limit supported by the 430 HX
chipset.
<Relationships between memory modules and Pentium
CPUs>
Pentium, 6x86 and AMD-K5 are all 64 bit CPUs, but 72-pin
SIMM modules are only 32-bit. That
’
s why they have to be
used in pairs, because the CPU will always be only able to
see 64 bits. This means that 72-pin SIMM modules have to
be installed in pairs. For instance, SIMM1 and SIMM2 must
form a pair, and SIMM3 and SIMM4 must form another
pair. Of course, the two members of a pair must be of the
same kind <EDO or FP DRAM>, and you cannot use pairs
from different
“
species
”
.
But this series supports different
“
pairs
”
and use different
type of memory modules, notice:
l
<SIMM1 and SIMM2>must use the same memory
type, as well as<SIMM3 and SIMM4>.
Computer
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