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Localized High Temperature Zones Table 30 provides maximum case temperatures for the board components that are sensitive to thermal changes. The operating temperature, current load, or operating frequency could affect case temperatures. Maximum case temperatures are important when considering proper airflow to cool the board. Technical Reference Table 30. Thermal Considerations for Components Component Maximum Case Temperature Intel Atom processor N270 90 oC Processor voltage regulator area 85 oC Intel 82945GSE GMCH 105 oC Memory SO-DIMM 85 oC For information about Refer to Processor datasheets and specification updates Section 1.2, page 14 2.7 Power Consumption Power measurements were performed to determine bare minimum and likely maximum power requirements from the board, as well as attached devices, in order to facilitate power supply rating estimates for specific system configurations. 2.7.1 Minimum Load Configuration Minimum load refers to the power demand placed on the power supply when using a bare system configuration with minimal power requirement conditions. Minimum load configuration test results are shown in Table 31. The test configuration was defined as follows: • 2 GB DDR2/533 MHz SO-DIMM • 20-inch LCD display through the DVI-D port • USB keyboard and mouse • LAN linked at 1 Gbps • DOS booted via network (PXE); system at idle • All on board peripherals enabled (serial, parallel, audio, …) Table 31. Minimum Load Configuration Current and Power Results Current Draw at 12 V Power Consumption 1.02 A 12.28 W 2.7.2 Maximum Load Configuration Maximum load refers to the incremental power demands placed on the power supply, augmenting the minimum load configuration into a fully-featured system that stresses power consumption from all subsystems. Maximum load configuration test results are shown in Table 32. The test configuration was defined as follows: • 2 GB DDR2/533 MHz SO-DIMM • 20-inch LCD display through DVI-D port • SATA DVD-R/W . Load: DVD playback • 3.5-inch SATA hard disk drive, running Microsoft Windows Vista Home Basic . Load: continuous read/write benchmark Intel Desktop Board D945GSEJT Technical Product Specification • 2.5-inch PATA hard disk drive . Load: continuous read/write benchmark • Intel Z-U130 USB Solid-State Drive (or compatible device) on the USB flash drive header . Load: continuous read/write benchmark • Wireless card on PCI Express Mini Card slot, connected via 802.11n protocol . Load: continuous read/write benchmark on remote share • Riser card on conventional PCI slot, populated with third-party modem and disk encryption add-in cards • USB keyboard and mouse • Back and front panel host-powered USB devices (other than keyboard and mouse) at or near 500 mA . Load: continuous read/write activity on external drive/peripheral • LAN linked at 1 Gbps . Load: continuous read/write benchmark on remote share • All on board peripherals enabled (serial, parallel, audio, …) Table 32. Maximum Load Configuration Current and Power Results Subsystem Current Draw at 12 V Power Consumption Minimum Load Configuration 1.02 A 12.28 W SATA DVD-R/W 0.29 A 3.48 W 3.5-inch SATA hard disk drive 0.525 A 6.24 W 2.5-inch PATA hard disk drive 0.3 A 3.6 W Intel Z-U130 USB Solid State Drive (or compatible device) 0.31 A 3.72 W Wireless PCI Express Mini Card 0.15 A 1.8 W PCI cards on riser 0.19 A 2.28 W Host-powered USB devices (other than keyboard and mouse) 0.72 A 8.64 W Maximum Load Configuration 3.505 A 42.04 W 2.8 Reliability The Mean Time Between Failures (MTBF) prediction is calculated using component and subassembly random failure rates. The calculation is based on the Bellcore Reliability Prediction Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction is used to estimate repair rates and spare parts requirements. The MTBF data was calculated from predicted data at 50 .C. The Intel Desktop Board D945GSEJT MTBF is 170,972 hours. Technical Reference 2.9 Environmental Table 33 lists the environmental specifications for the board. Table 33. Intel Desktop Board D945GSEJT Environmental Specifications Parameter Specification Temperature Non-Operating -20 °C to +70 °C Operating 0 °C to +35 °C Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/second. Packaged Half sine 2 millisecond Product weight (pounds) Free fall (inches) Velocity change (inches/sec.) <20 36 167 21-40 30 152 41-80 24 136 81-100 18 118 Vibration Unpackaged 5 Hz to 20 Hz: 0.01 g. Hz sloping up to 0.02 g. Hz 20 Hz to 500 Hz: 0.02 g. Hz (flat) Packaged 10 Hz to 40 Hz: 0.015 g. Hz (flat) 40 Hz to 500 Hz: 0.015 g. Hz sloping down to 0.00015 g. Hz Intel Desktop Board D945GSEJT Technical Product Specification Overview of BIOS Features 3.1 Introduction The board uses an Intel BIOS that is stored in the Serial Peripheral Interface Flash Memory (SPI Flash) and can be updated using a disk-based program. The SPI Flash contains the BIOS Setup program, POST, the PCI auto-configuration utility, LAN EEPROM inform...