Datasheet

1-6

X7DBU/X7DGU User's Manual

Motherboard Features

CPU

• Dual Intel

64-bit Xeon LGA 771 Quad-core/Dual-core processors at a front side

bus speed of 1.333 GHz/1.066 GHz/667 MHz

Memory

• 8 240-pin DIMM sockets with support up to 32 GB DDR2 Fully Buffered (FBD)

ECC 667/533 Memory (*See Section 2-3 in Chapter 2 for DIMM Slot Popula-

tion.)

Chipset

*X7DBU:

• Intel 5000P chipset, including: the 5000P Memory Control Hub (MCH) and the

Enterprise South Bridge 2 (ESB2).

*X7DGU:

• Intel 5000X chipset, including: the 5000X Memory Control Hub (MCH) and the

Enterprise South Bridge 2 (ESB2).

Expansion Slots

*X7DBU:

• Two PCI-Express slots (SXB1: PCI-E x8 + x8 Single Slot, SXB2: PCI-E x8)

• One 64-bit PCI-X 133 MHz slot (J14)

*X7DGU (for OEM only):

• Two PCI-Express slots (SXB1: PCI-E x16, SXB2: PCI-E x8)

• One 64-bit PCI-X 133 MHz slot (J14)

BIOS

• 8 Mb Phoenix

Flash ROM

• DMI 2.3, PCI 2.2, ACPI 1.0/2.0, Plug and Play (PnP), SMBIOS 2.3 and USB

Keyboard support

PC Health Monitoring

• Onboard voltage monitors for CPU cores, chipset voltage, memory voltage,

HT voltage, +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

• Platform Environment Control Interface (PECI) ready