MSI H55M-E21 manual Memory, Dual -Channel mode Population Rule

Hardware Setup

Memory

These DIMM slots are used for installing memory modules. For more information on compatible components, please visit http://www.msi.com/index.php?func=testreport

DDR3

240-pin, 1.5V

48x2=96 pin

72x2=144 pin

Dual-Channel mode Population Rule

In Dual-Channel mode, the memory modules can transmit and receive data with two data bus lines simultaneously. Enabling Dual-Channel mode can enhance the system performance. The following illustrations explain the population rules for Dual-Channel mode.

DIMM1

DIMM2

Installed

Empty

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 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 (Lynnfield CPU especially), always insert the memory modules into the DIMM1 first.

•Due to the chipset resource deployment, the system density will only be detected up to 7+GB (not full 8GB) when each DIMM is installed with a 4GB memory module.

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