For the record, the H70 pump has similar specs as the H50 pump, but the profile is lower in order to provide the clearance for the 50mm thick radiator and dual 120mm fans. The fans are also upgraded from the H50. Very similar to the fan kit that comes with the A70, actually.

Performance wise, this doesn't make much difference on lower-clocked systems or idle temps, but on a 4GHz overclock at 1.4V on a Core i7, it can make more than 10-13C difference at load.