1-6
X7DCU User's Manual
Motherboard Features
CPU
Dual Intel•
®
64-bit Xeon LGA 771 Quad-Core/Dual-Core 5400/5300/5200/5100
Sequence processors at a front side bus speed of 1333 MHz/1066 MHz
Memory
Six 240-pin DIMM sockets with support up to 48 GB ECC Buffered (Registered) •
DDR2 667/533 MHz Memory (*See Section 2-3 in Chapter 2 for DIMM Slot
Population.)
Chipset
Intel 5100 chipset, including: the 5100 Memory Control Hub (MCH), and the •
ICH9R South Bridge
Expansion Slots
One PCI-Exp. x16 slot (SXB1: J5)•
One PCI-Exp. x8 slot (SXB2)•
One SIMSO IPMI Slot•
BIOS
16 Mb Phoenix•
®
SPI Flash ROM
DMI 2.3, PCI 2.2, ACPI 1.0/2.0, Plug and Play (PnP), USB Keyboard support,
•
Hardware BIOS Virus Protection and SMBIOS 2.3
PC Health Monitoring
Onboard voltage monitors for CPU core voltage, Memory voltage, Chipset, •
+1.8V, +3.3V, +5V, +12V, −12V, +3.3V standby, +5V standby and VBAT)
Fan status monitor with fi rmware control
•
CPU/chassis temperature monitors•
Low noise fan speed control •
CPU fan auto-off in sleep mode•
Pulse Width Modulation (PWM) fan control•
I•
2
C temperature sensing logic
Thermal Monitor 2 (TM2) support
•
CPU slow-down on temperature overheat•
CPU thermal trip support for processor protection•
Power-up mode control for recovery from AC power loss•
Chassis intrusion detection•
System resource alert via Supero Doctor III•
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