Вот накопал спецификацию на аналогичный Интел:
Цитата
Table 21. Recommended Power Supply Current Values
Output Voltage - Current
3.3V - 0.52A
5V - 7.34A
12V1 - 1.17A
12V2 - 0.54A
-12V - 0.03A
5VSB - 0.25A
For example, for a system consisting of a D945GCLF2 board (with integrated Dual-
Core Intel Atom processor at 8 W), 2 GB DDR2 RAM, one hard disk drive, one optical
drive, and all board peripherals enabled, the minimum recommended power supply is
80 W. Table 22 lists the recommended power supply current values.
Думаю у ГБ сильно отличаться не будет. Спасибо!