MSI X58 Platinum Series User Manual page 23

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.
- 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
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