X8DTU-6F+/X8DTU-6TF+/X8DTU-6(T)F+-LR
1.35V RDIMM Population for the Motherboard w/5600 Processors
3
3
3
2 | Reg. DDR3 ECC | 800,1066 (Note 2) | Mixing SR, DR |
2 | Reg. DDR3 ECC | 800 (Note 3) | Mixing SR, DR, QR |
3 | Not Available | Not Available | Not Available |
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Note 1: 1333/1066 MHz QR RDIMMs will run at 800 MHz
Note 2: 1333 MHz SR/DR RDIMMs will run at 800 MHz
Note 3: 1333/1066 MHz SR/DR/QR RDIMMs will run at 800 MHz
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 | UDIMM (Unb. DIMM/ | Speeds (in MHz) | Ranks per DIMM |
Slots per | Populated | Unbuffered DIMM) |
| (any combination; |
Channel | per Channel |
|
| SR=Single Rank, |
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| DR=Dual Rank, |
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| QR=Quad Rank) |
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3 | 1 | Unb. DDR3 ECC | 800,1066,1333 | SR or DR |
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3 | 2 | Unb. DDR3 ECC | 800,1066 | Mixing SR, DR |
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3 | 3 | Not Available | Not Available | Not Available |
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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 memory that remains available for operational use will be reduced when 4 GB of RAM is used. The reduction in memory availability is dispropor- tional. (See the following Table.)
Possible System Memory Allocation & Availability
System Device
Firmware Hub flash 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)
VGA Memory
TSEG
Memory available for the OS & other applications
Size
1MB
4KB
2MB
4KB
256MB
256MB
512MB
16MB
1MB
PhysicalMemory
Remaining
(4 GB Total System Memory)
3.99GB
3.99GB
3.99GB
3.99GB
3.76GB
3.51GB
3.01GB
2.85GB
2.84GB
2.84GB
