2-10
X8DAH+/X8DAH+-F/X8DAH+(-F)-LR User's Manual
2. For PCB Rev. 2.0 or Newer Boards
For memory to work properly, follow the tables below for memory installation:
Memory Population for Optimal Performance for PCB Rev. 2.0 or Newer
Boards with One CPU Installed in CPU Socket 1
P1-DIMMs
To Populate P1-DIMMs
Branch 0
Branch 1
Branch 2
3 DIMMs
P1-1A
P1-2A
P1-3A
6 DIMMs
P1-1A
P1-1B
P1-2A
P1-2B
P1-3A
P1-3B
9 DIMMs
(RDIMMs only) (
Note
)
P1-1A
P1-1B
P1-1C
P1-2A
P1-2B
P1-2C
P1-3A
P1-3B
P1-3C
Note
: Max. of 6 UDIMM modules are supported by a CPU.
Memory Population for Optimal Performance for PCB Rev. 2.0 or Newer
Boards with One CPU Installed in CPU Socket 2
P2-DIMMs
To Populate P2-DIMMs
Branch 0
Branch 1
Branch 2
3 DIMMs
P2-1A
P2-2A
P2-3A
6 DIMMs
P2-1A
P2-1B
P2-2A
P2-2B
P2-3A
P2-3B
9 DIMMs
(RDIMMs only (
Note
)
P2-1A
P2-1B
P2-1C
P2-2A
P2-2B
P2-2C
P2-3A
P2-3B
P2-3C
Note
: Max. of 6 UDIMM modules are supported by a CPU.
Memory Population for Optimal Performance for PCB Rev. 2.0 or Newer
Boards with Two CPUs Installed in CPU Sockets 1 & 2
CPU 1 (To Populate P1-DIMMs)
CPU 2 (To Populate P2-DIMMs)
Branch 0
Branch 1
Branch 2
Branch 0
Branch 1
Branch 2
6 DIMMs
P1-1A
P1-2A
P1-3A
P2-1A
P2-2A
P2-3A
12 DIMMs
P1-1A/1B
P1-2A/2B
P1-3A/3B
P2-1A/1B
P2-2A/2B
P2-3A/3B
18 DIMMs
(For RDIMMs only)
(Note)
P1-
1A/1B/1C
P1-
2A/2B/2C
P1-
3A/3B/3C
P2-
1A/1B/1C
P2-
2A/2B/2C
P2-
3A/3B/3C
Note
: Max. of 6 UDIMM modules are supported by a CPU.
Memory Support for the Motherboard w/5500 CPU(s) Installed
RDIMM Population for the Motherboard w/5500 Processors Installed
DIMM
Slots per
Channel
DIMMs
Populated
per Channel
DIMM Type (Reg.=
Registered)
Speeds (in MHz)
Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
3
1
Reg. DDR3 ECC
800,1066,1333
SR or DR
3
1
Reg. DDR3 ECC
800,1066
QR
3
2
Reg. DDR3 ECC
800,1066
Mixing SR, DR
3
2
Reg. DDR3 ECC
800
(Note)
Mixing SR, DR, QR
3
3
Reg. DDR3 ECC
800
(Note )
Mixing SR, DR
Note:
1066 RDIMMs will run at 800 MHz (-BIOS automatic downgrading)
