SUPER MICRO Computer 1.0a user manual Advanced Serverboard Setup 35V DIMMs

Chapter 5: Advanced Serverboard Setup

•1.35V DIMMs

1.35V RDIMM Population with 5600 Processors Installed

DIMM	DIMMs	DIMM Type	Speeds (in MHz)	Ranks per DIMM
Slots per	Populated	(Reg.=Registered)		(any combination;
Channel	per Channel			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
3	3	Not Available	Not Available	Not Available

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 with 5600 Processors Installed

DIMM	DIMMs	DIMM Type (Unb.=	Speeds (in MHz)	Ranks per DIMM
Slots per	Populated	Unbuffered)		(any combination;
Channel	per Channel			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
3	3	Not Available	Not Available	Not Available

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.

Possible System Memory Allocation & Availability

System Device	Size		Physical Memory Remaining
			(4 GB Total System
			Memory)
Firmware Hub flash memory (System BIOS)	1	MB	3.99
Local APIC		KB
	4		3.99
Area Reserved for the chipset		MB
	2		3.99
I/O APIC (4 Kbytes)		KB
	4		3.99
PCI Enumeration Area 1	256 MB
			3.76
PCI Express (256 MB)	256 MB
			3.51
PCI Enumeration Area 2 (if needed) -Aligned on 256-MB boundary-	512 MB
			3.01
VGA Memory	16 MB
			2.85
TSEG	1 MB
			2.84
Memory available to System BIOS & OS applications
			2.84

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