Originally Posted by
elanthis
They're not going to beat any modern amd64 based chip for some time. A 2ghz ARM is nowhere near comparable to a SandyBridge or even a Bulldozer in terms of raw power. Aside from just the difference in interconnects (say, built in triple channel DDR3-1866 and PCI-X 2.1), the branch prediction, SIMD units, and so on are just not there in the ARM chips. Gigahertz just don't matter that much (try comparing a 2.2ghz i7 to a 3.4ghz Bulldozer, for instance).
Power consumption will be lower, and performance per Watt may even still be way better, but raw performance will not be.