1-6
X6DHR-C8 User's Manual
Motherboard Features
CPU
• Single or dual Intel
®
Xeon 64-bit 604-pin (Nocona
TM
w/EM64T) processors at
800 MHz front side (system) bus speed.
• Hyper-Threading (HT), EM64T supported
Using the EM64T Feature
• Use a CPU that supports the EM64T Technology
• Install a 64-bit OS (Windows XP Professional x64 Ed, Server 2003x64 Ed.)
• Install the 64-bit drivers for all MB components, devices and add-on cards
Using the Hyper-Threading (HT) Technology
• Use a CPU that supports Hyper-Threading Technology
• Install an OS that supports HT, including Windows XP/2003 Server and Linux
2.4x.
• Enable the HT feature in the BIOS (under "Advanced" Setting) before install-
ing a supported OS. (*Note: visit www.Intel.com for CPU support and driver
updates.)
Memory
• Eight 240-pin DIMM sockets supporting up to 16 GB Registered ECC DDR2-
400 (PC3200) SDRAM
(*Note: Interleaved memory requires memory modules to be installed in pairs.
See Section 2-3 for details.)
Chipset
• Intel E7520 Lindenhurst chipset
• ICH5R, PXH (X2), 82546GB (X4)
• National P87427 I/O chip
Expansion Slots
• One PCI-E slot (x8), or
• One PCI-X-100 slot
BIOS
• 8
Mb
Phoenix
®
Flash ROM
• DMI 2.1, PCI 2.2, ACPI 2.0, Plug and Play (PnP), SMBIOS 2.3
PC Health Monitoring
• Onboard voltage monitors for CPU cores, chipset voltage, 3.3V, +5V, +3V
standby,
+
12V and -12V
• Fan status monitor with fi rmware/software on/off control
• CPU/chassis temperature monitors
• CPU 3-phase-switching voltage regulator
• Low noise fan speed control and System overheat/Fan Fail LED and control
• SuperDoctor III, NMI w/System resource alert via Supero Doctor III
• Environmental temperature monitoring via BIOS
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