ECS G41T-M9 Manual page 5

Installing Memory Modules
This motherboard accommodates four memory modules. It can support four 240-pin
DDR3 1066/800. The total memory capacity is 8 GB.
DDR3 SDRAM memory module table
Memory module
DDR3
DDR3
You must install at least one module in any of the four slots. Total memory capacity
is 8 GB.
The four DDR3 memory sockets (DDR3_1, DDR3_2, DDR3_3 and DDR3_4) are
divided into two channels and each channel has two memory sockets as following:
Channel A: DDR3_1, DDR3_2
Channel B: DDR3_3, DDR3_4
Recommend memory configuration
Mode
DDR3_1
1 DIMM Populated
2 DIMMs Populated
Populated
4 DIMMs
(Single Side)
1. For best performance and compatibility, we recommend that users give
priority to the orange DIMMs (DDR3_1/DDR3_3) when installing DIMMs.
2. We suggest users not mix memory type. It is recommended to use the
same brand and type memory on this motherboard.
3. You may not populate three DIMMs at one time, and if the four DIMMs
are populated at one time, the memory will run at 800MHz.
Do not remove any memory module from its antistatic packaging until you
are ready to install it on the motherboard. Handle the modules only by
their edges. Do not touch the components or metal parts. Always wear a
grounding strap when you handle the modules.
Memory Bus
800 400 MHz
1066 533 MHz
Sockets
DDR3_2 DDR3_3
Populated
Populated Populated
(Single Side) (Single Side)
5
DDR3_4
Populated
(Single Side)