Supermicro X8DT6 User Manual page 32

X8DT6/X8DT6-F/X8DTE/X8DTE-F User's Manual
•
1.35V DIMMs
1.35V RDIMM Population for the Motherboard w/5600 Processors Installed
DIMM DIMMs
Slots per Populated
Channel per Channel
2 1
2 1
2 2
2 2
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).
Note 4: Mixing of 1.35V and 1.5V DIMMs is not recommended.
1.35V UDIMM Population for the Motherboard w/5600 Processors Installed
DIMM DIMMs
Slots per Populated
Channel per Channel
2 1
2 2
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.
Notes: 1: Due to OS limitations, some operating systems may not show
more than 4 GB of memory. 2: Due to memory allocation to system de-
vices, 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.
Possible System Memory Allocation & Availability
System Device
Firmware Hub fl ash memory (System BIOS)
Local APIC
Area Reserved for the chipset
I/O APIC (4 Kbytes)
PCI Enumeration Area 1
PCI Express (256 MB)
PCI Enumeration Area 2 (if needed) -Aligned on
256-MB boundary-
VGA Memory
TSEG
Memory available for the OS & other applications
DIMM Type Speeds (in MHz)
(Reg.=Registered)
Reg. DDR3 ECC 800,1066,1333
Reg. DDR3 ECC 800 (Note 1)
Reg. DDR3 ECC 800,1066 (Note 2)
Reg. DDR3 ECC 800 (Note 3)
DIMM Type (Unb.=
Unbufered)
Unb. DDR3 ECC
Unb. DDR3 ECC
Size
1 MB
4 KB
2 MB
4 KB
256 MB
256 MB
512 MB
16 MB
1 MB
2-10
Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
SR or DR
QR
Mixing SR, DR
Mixing SR, DR, QR
Speeds (in MHz) Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
800,1066,1333 SR or DR
800,1066 Mixing SR, DR
Physical Memory (4 GB Total memory)
Remaining (-Available)
3.99 GB
3.99 GB
3.99 GB
3.99 GB
3.76 GB
3.51 GB
3.01 GB
2.85 GB
2.84 GB
2.84 GB