Ampro Corporation XTX 820 - Manual (Page 20)

Chapter 2 Product Overview
14 Reference Manual XTX 820
Power Specifications
Table 2-4 lists the power requirements for each XTX 820 CPU model as described below.
Table 2-4. Power Supply Requirements
Parameter 1.0 GHz ULV Celeron
M Characteristics 1.4 GHz LV Pentium M
Characteristics 1.8 GHz LV Pentium M
Characteristics
Input Type Regulated DC voltages Regulated DC voltages Regulated DC voltages
In-rush Current* 14.20A 16.20A 14.16A
Typical BIT**
Current (W) 3.34A (16.71W) 3.89A (19.46W) 5.31A (26.57W)
Notes: *The In-rush current represents video, 256 MB RAM, and power only connected through the
Ampro baseboard. Typically, in-rush current reflects the short duration current spike associated with
charging large on-board bulk capacitance during power supply start up. However, the listed in-rush
current value is the result of placing a switch on the DC output of a fully 'ramped' power supply to
give a worst-case current value, which is much higher than the standard method. This in-rush value
should be regarded as a maximum design guideline, not a requisite value.
**The Burn-In-Test (BIT) current setup has CRT video, 256 MB RAM, floppy drive (1), IDE hard
disk drive (1), USB hard disk drive (1), USB CD-ROM (1), serial ports with loopbacks (3), keyboard,
mouse, USB compact flash card reader with compact flash card (64 MB) installed (1), USB Jump-
drive (1), and the Ethernet port (1) operating under Microsoft
® Windows®™ XP (SP2). All current
measurements include the Ampro baseboard in the QuickStart Kit.
Environmental Specifications
Table 2-5 provides the most efficient operating and storage condition ranges required for this board.
Table 2-5. Environmental Requirements
Parameter 1.0 GHz ULV Celeron
M Conditions 1.4 GHz LV Pentium
M Conditions 1.8 GHz LV Pentium
M Conditions
Operating +0
° to +60°C
(32
° to +158°F)
+0
° to +60°C
(32
° to +158°F)
+0
° to +60°C
(32
° to +140°F)
Temperature
Storage –20° to +75°C
(–4
° to +185°F)
–20° to +75°C
(–4
°to +185°F)
–20° to +75°C
(–4
° to +185°F)
Operating 5% to 95%
relative humidity,
non-condensing 5% to 95%
relative humidity,
non-condensing 5% to 95%
relative humidity,
non-condensing
Humidity
Storage 5% to 95%
relative humidity,
non-condensing 5% to 95%
relative humidity,
non-condensing 5% to 95%
relative humidity,
non-condensing
Thermal/Cooling Solutions
The Pentium/Celeron M processors used on the XTX 820 make use of the thermal monitor feature to
help control the processor temperature. Refer to the Thermal Monitoring topic in Chapter 3, Hardware
for more information. The maximum core operating temperature for Pentium M and Celeron M
processors is 100°C. Both Pentium M and Celeron M processors and the Memory & Graphics Hub
(Northbridge) require individual heatsinks, but no fan. Ampro provides an optional heatspreader plate.
CAUTION To prevent processor overheating, you must provide an additional form of
cooling when using the heatspreader provided. The heatspreader plate is
not a complete thermal solution for any of the processors listed.