You need to edit these lines in your power.conf like this if you want it be at max 700:

# Automatic voltage scaling
scaling_governor ondemand
scaling_max_freq 700000
scaling_min_freq 125000

# Frequencies
# ALL: 1150000 1100000 1000000 950000 900000 850000 805000 750000 700000 600000 550000 500000 250000 125000
# USE: 700,500,250,125
#avoid_frequencies 1150000 1100000 1000000 950000 900000 850000 805000 600000 550000
# USE: 700,550,250,125
#avoid_frequencies 1150000 1100000 1000000 950000 900000 850000 805000 750000 600000 500000
# USE: 700, 500, 250, 125
avoid_frequencies 1150000 1100000 1000000 950000 9000000 850000 805000 750000 600000 550000

Use any txt editor. I think you need to be root, i'm not sure. If you want more options in your overclocking just add them in USE: and remove them from avoid_frequencies

Hope this helps

Ps: I would make a backup just incase before doing any editing