1-6
X8DTT-H+/-HF+/-HEF+/-HIBXF+/-HIBQF+ User's Manual
Motherboard Features
CPU
Two Intel
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®
5500/5600 Series (LGA 1366) processors with each processor sup-
porting two full-width Intel QuickPath Interconnect (QPI) links with a total of up
to 51.2 GT/s Data Transfer Rate supported (6.4 GT/s per direction)
Memory
Twelve 240-pin DIMM sockets support up to 192 GB of DDR3 Registered ECC
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or 48 GB of Unbuffered ECC/Non-ECC 1333/1066/800 MHz Memory (with max.
16 GB of Registered ECC and 4 GB of Unbuffered memory per DIMM slot.) (See
Section in Chapter 2 for DIMM Slot Population. Be sure to check the recom-
mended memory listed posted on our website @www.supermicro.com.)
Chipset
Intel 5500/5520 chipset, including: the 5500/5520 (IOH-24D/IOH-36D) and the
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ICH10R (South Bridge).
Note:
the 5500 chipset (IOH-24D) is available on the X8DTT-H+/-HF+/-
HEF+ only.
Expansion Slot
One PCI-E x16 Gen. 2.0 slot (Slot 1)
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One PCI-E x8 Gen. 2.0 slot for use with the SMC Proprietary Daughter (Add-On)
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card (J3: SXB1, Available on the X8DTT-HEF+/-HIBXF+/-HIBQF+ only)
BIOS
32 Mb AMI SPI Flash ROM
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ACPI 1.0/2.0/3.0, Plug and Play (PnP), and USB Keyboard support
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PC Health Monitoring
Onboard voltage monitors for CPU1 VCore, CPU2 VCore, +5Vin,
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12Vcc (V),
VP1 DIMM, VP2 DIMM, +3.3Vcc (V), and Battery Voltage
Fan status monitor with fi rmware control
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CPU/chassis temperature monitors
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I
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2
C temperature sensing logic
SDDC support
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Platform Environment Control Interface (PECI) ready
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CPU fan auto-off in sleep mode
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CPU slow-down on temperature overheat
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Pulse Width Modulation (PWM) Fan Control
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