Memory - MSI 990XA-GD55 series User Manual

Memory

These DIMM slots are used for nstallng memory modules. For more nformaton on
compatble components, please vst http://www.ms.com/servce/test-report/
DDR3
240-pn, 1.5V
Dual-Channel mode Populaton Rule
In Dual-Channel mode, the memory modules can transmt and receve data wth two
data bus lnes smultaneously. Enablng Dual-Channel mode can enhance the system
performance. The followng llustratons explan the populaton rules for Dual-Channel
mode.
1
2
Important
• DDR3 memory modules are not nterchangeable wth DDR2 and the DDR3 standard
s not backwards compatble. You should always nstall DDR3 memory modules n
the DDR3 DIMM slots.
• In Dual-Channel mode, make sure that you nstall memory modules of the same type
and densty n dfferent channel DIMM slots.
To enable successful system boot-up, always nsert the memory modules nto the
•
DIMM1 first.
Due to the chpset resource deployment, the system densty wll only be detected up
•
to 31+GB (not full 32GB) when each DIMM s nstalled wth a 8GB memory module.
72x2=144 pn 48x2=96 pn
DIMM1
DIMM3
DIMM2
DIMM4
DIMM1
DIMM3
DIMM2
DIMM4
Installed
Empty
En-9