Intel GA-8IPXDR-E - Manual (Page 15)

Hardware Installation Process
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Step 2: Install memory modules
The motherboard has 6 dual inline memory module (DIMM) sockets, but it can only support a
maximum of 3 banks DDR memory. DDR socket 1 uses 1 bank, DDR socket 2& 3 share the
remaining 2 banks. The BIOS will automatically detects memory type and size. To install the memory
module, just push it vertically into the DIMM Slot .The DIMM module can only fit in one direction due
to the notch.Memory size can vary between sockets.
Registered DDR
Notch
J4 (B-1)
J1 (A-1)
J5 (B-2)
J2 (A-2)
J6 (B-3)
J3 (A-3)