Chapter 2: Installation
2-9
1.5V UDIMM Population for the Motherboard w/5600 Processors Installed
DIMM
Slots per
Channel
DIMMs
Populated
per Channel
DIMM Type (Unb.=
Unbuffered)
Speeds (in MHz) Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
3 1 Unb. DDR3 ECC/Non-ECC 800,1066,1333 SR or DR
3 2 Unb. DDR3 ECC/Non-ECC 800,1066, 1333 Mixing SR, DR
Note 1: 1333 MHz for two DIMMs per channel is supported when Unbuf./ECC DIMMs are used.
Note 2: MIxing of 1.35V and 1.5V DIMMs is not recommended.
1.35V DIMMs•
1.35V RDIMM Population for the Motherboard w/5600 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 (Note 1) QR
3 2 Reg. DDR3 ECC 800,1066 (Note 2) Mixing SR, DR
3 2 Reg. DDR3 ECC 800 (Note 3) Mixing SR, DR, QR
Note 1: 1333/1066 MHz QR RDIMMs will run at 800 MHz (-BIOS automatic downgrading).
Note 2: 1333 MHz SR/DR RDIMMs will run at 800 MHz (-BIOS automatic downgrading).
Note 3: 1333/1066 MHz SR/DR/QR RDIMMs will run at 800 MHz (-BIOS automatic downgrading)
1.35V UDIMM Population for the Motherboard w/5600 Processors Installed
DIMM
Slots per
Channel
DIMMs
Populated
per Channel
DIMM Type (Unb.=
Unbuffered)
Speeds (in MHz) Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
3 1 Unb. DDR3 ECC 800,1066,1333 SR or DR
3 2 Unb. DDR3 ECC 800,1066 Mixing SR, DR
Note 1: 1333 MHz for two DIMMs per channel is supported when Unbuf./ECC DIMMs are used.
Note 2: MIxing of 1.35V and 1.5V DIMMs is not recommended.
Note 1: Memory speed support depends on the type of CPU used.
Note 2: Due to OS limitations, some operating systems may not show
more than 4 GB of memory. Also, due to memory allocation to system
devices, the amount of memory that remains available for operational use
will be reduced when 4 GB of RAM is used. The reduction in memory
availability is disproportional.
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