Beyond 1.2ghz dual core which is plenty fast enough for a phone, is it likely we'll see cpu speeds going up and up to like 3 or 4ghz in years to come? If so, why? I can't really envisage the necessity for it in the same way a pc needs it. Have we almost reached a practical limit with the samsung galaxy S2, HTC Sensation and others springing up with dual core cpu's?