In comparison to the previous Hydro H50, the H70 has cut its pump/waterblock height in half, measuring now only 30mm. However it has boosted heat dissipation with a 48mm-thick radiator, double the previous model, and the addition of a second fan.
It still maintains a black finish and features proprietary hoses that virtually eliminate evaporation of water, and due to the decrease in hose length and pump height, it now includes rotating connectors on the pump side to help with varied mounting positions.
Full story at Overclockers.