Ryzes Damage
Did some math
Assuming that you perfectly time the w-q-e-q combo, issue no movement commands, and you are in a zero ping environment, Ryze can do 6 rotations of this combo.
With all spells at max rank, 6 rotations of w-q-e-q combo will deal 4014 damage, plus 1080% his ability power, and 75% of his maximum mana (not accounting for item effect damage)
This disregards human elements. In order to pull of a maximum efficiency ryze combo, you need to have zero ping (ie lcs), play with a metronome, and practice an assload.
So, take this as you will.
math ((185x2)+185+114)6=4014 (base) ((55x2)+40+30)6=1080 (AP scaling) ((4x2)+2.5+2)6=75 (mana scaling)