Thank you all for your answers, now I get it!

Hello, I have a rasperry pi with a 2 ampere power adapter. I measured the power consumption with a current measuring device. Running at 700Mhz, it consumes 2,5W with 0,025A. Running at 1000Mhz, it consumes 3W with 0,028A How can this be? I thought the raspberry needs at least ~700mA, going up to 1+A...