MSI MS-7520 ECLIPSE Series User Manual page 24

Important
- DDR3 memory modules are not interchangeable with DDR2 and the DDR3
standard is not backwards compatible. You should always install DDR3
memory modules in the DDR3 DIMM slots.
- In Three-/ Dual- channel mode, make sure that you install memory modules of
the same type and density in different channel DIMM slots. If the speeds of
installed memeory modules are different (ex. 1066 & 1333), the system will
detect and operate the lower speed (1066) with all installed memory modules.
- Please always install the same type and density memory modules in DIMM
slots to avoid the damage of memory.
- To enable successful system boot-up, always insert the memory modules
into the DIMM _A0 first.
- Due to the chipset resource deployment, the system density will only be
detected up to 23+GB (not full 24GB) when each DIMM is installed with a 4GB
memory module.
- When you install incorrect memory module (the SA2-pin of the memory
module connects to Ground) in the DIMM_C0/C1, the LED beside DIMM_C0
will light red color to remind you. The position of the LED is shown as below.
Double confirm with your memory module vender for the third channelsupports.
Hardware Setup
2-9