GREETINGS TO ALL !
MOST VAIO HARD DRIVES RUN AT 4200 RPM,(MINE DOES ALSO).THE FE31M CAME WITH A 160 GB DRIVE BUT I'VE RUN OUT OF SPACE.I WANT TO BUY A 250 OR 320 GB DRIVE AT 5400 RPM BUT AM A LITTLE WORRIED ABOUT BATTERY DRAINAGE WITH THE INCREASED SPEED.CURRENTLY I'M GETTING ABOUT 1 HOUR 45 MIN. OF DVD WATCHING OUT OF THE CURRENT SET-UP..ANY IDEAS ABOUT HOW MUCH EXTRA JUICE A FASTER HDD WILL NEED ?