Which i7 processor is better? 3610QM or 3632QM

I checked out Core i7 from different manufacturers, they are shipping either 3610QM (like Asus K55VM) or 3632QM (like Dell 15R). Which one is a better processor? If I go based on clock speed, 3610QM is marginally faster, whereas 3632QM has lower wattage (TDP of 35W).