MSI 990FXA User Manual

Hardware Setup
MS-7640
Chapter 2
2-7
Hardware Setup
MS-7640
Chapter 2
Memory
These DIMM slots are used for nstallng memory modules. For more nformaton on
compatble components, please vst http://www.ms.com/servce/test-report/
DDR3
240-pn, 1.5V
48x2=96 pn 72x2=144 pn
Dual-Channel mode Populaton Rule
In Dual-Channel mode, the memory modules can transmt and receve data wth two
data bus lnes smultaneously. Enablng Dual-Channel mode can enhance the system
performance. The followng llustratons explan the populaton rules for Dual-Channel
mode.
1
DIMM1
DIMM3
DIMM2
DIMM4
2
DIMM1
DIMM3
DIMM2
DIMM4
Installed
Empty
Important
DDR3 memory modules are not nterchangeable wth DDR2 and the DDR3 standard
s not backwards compatble. 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 densty n d󰘯erent channel DIMM slots.
To enable successful system boot-up, always nsert the memory modules nto the
DIMM1 󰘰rst.
Due to the chpset resource deployment, the system densty wll only be detected up
to 31+GB (not full 32GB) when each DIMM s nstalled wth a 8GB memory module.
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MSI 990FXA Specifications

General

Brand	MSI
Model	990FXA
Category	Motherboard
Language	English