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X7DCL-3/X7DCL-i User's Manual
Motherboard Features
CPU
• Dual Intel
®
64-bit Xeon LGA 771 Quad Core/Dual Core 5400/5300/5200/5100
Series processors at a front side bus speed of 1333 MHz/1066 MHz
Memory
• Six 240-pin DIMM sockets with support up to 32 GB Single-Rank, Registered/
ECC DDR2 667/533 Memory.
Note: PCB revision 1.1a and later will now support up to 48 GBs of Single-
Rank, Registered/ECC DDR2 667/533 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
• Two PCI-E x8 slot (Slot 5/Slot 6), and one in PCI-E x4 (in x8) slot (Slot 4)
• Three 32-bit PCI 33 MHz slot (Slot 1/Slot 2/Slot 3)
• One SIMLC IPMI Slot (Slot 0)
BIOS
• 8 Mb Phoenix
®
Flash ROM
• DMI 2.3, PCI 2.2, ACPI 1.0, 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, +1.8V, +3.3V,
+5V, +12V, -12V, +3.3V standby, +5V standby and VBAT)
• Fan status monitor with rmware control
• CPU/chassis temperature monitors
• Low noise fan speed control
• Platform Environment Control Interface (PECI) ready
• 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