MSI X99A RAIDER Mode D'emploi page 28

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Memory
These DIMM slots are used for installing memory modules.
Video Demonstration
Watch the video to learn how to install memory.
http://youtu.be/T03aDrJPyQs
Up to Quad-Channel mode
This mainboard supports up to four memory channels. Two DIMM slots provide a
single channel. The memory modules can transmit and receive data with four data bus
channels simultaneously to enhance system performance. Please refer the following
tables for more details.
Channel
Channel A
Channel B
Channel C
Channel D
Important
• DDR4 memory modules are not interchangeable with DDR3, and the DDR4
standard is not backward compatible. Always install DDR4 memory modules in
DDR4 DIMM slots.
• Always insert memory modules in the DIMM1 slot first.
• Due to chipset resource usage, the system will only detect up to 127+ GB of
memory (not full 128 GB) when all DIMM slots have 16GB memory modules
installed.
Defined Channel list
En-14
DIMM1
DIMM2
DIMM3
DIMM4
DIMM8
DIMM7
DIMM6
DIMM5
DIMM Slot
DIMM1, DIMM2
DIMM3, DIMM4
DIMM5, DIMM6
DIMM7, DIMM8