Supermicro Supero X8DTH-6F User Manual page 32

X8DTH-6/X8DTH-6F/X8DTH-i/X8DTH-iF User's Manual
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.
Note 1: Due to OS limitations, some operating systems may not show
more than 4 GB of memory.
Note 2: Due to memory allocation to system devices, the amount of mem-
ory 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-M
boundary-
VGA Memory
TSEG
Memory available for the OS & other applications
DIMM Type (Unb.=
Unbuffered)
Unb. DDR3 ECC
Unb. DDR3 ECC
2-10
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
Size Physical Memory Available
(4 GB Total System Memory)
1 MB 3.99 GB
4 KB 3.99 GB
2 MB 3.99 GB
4 KB 3.99 GB
256 MB 3.76 GB
256 MB 3.51 GB
512 MB 3.01 GB
16 MB 2.85 GB
1 MB 2.84 GB
2.84 GB