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Is 1GHz dual core the same as 2GHz?

Is 1GHz dual core twice as fast as 1GHz?

Most Useful Answer mrew42  Oct. 25, 2011 at 10:07

No/Yes/Maybe*
No a 1Ghz dual core is not the same as a 2Ghz single core.
It all depends on the O/S ability to use both cores. 2Ghz (in general) has more raw speed and, depending on the design of the chip, could well be capable of being faster than a dual core for a single task. Move into parallel processing and the dual core will start to show it's mettle, IF the o/s and the app can use both cores properly.
Clock speed isn't everything though. My HTC Sensation's CPU clocked to 1.5Ghz only just starts to get the edge on Samsung's Galaxy S II 1.2Ghz CPU.
Basically the numbers don't tell you half of the story in the real world.
*delete as applicable.

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mrew42  Oct. 25, 2011 at 10:07

No/Yes/Maybe*
No a 1Ghz dual core is not the same as a 2Ghz single core.
It all depends on the O/S ability to use both cores. 2Ghz (in general) has more raw speed and, depending on the design of the chip, could well be capable of being faster than a dual core for a single task. Move into parallel processing and the dual core will start to show it's mettle, IF the o/s and the app can use both cores properly.
Clock speed isn't everything though. My HTC Sensation's CPU clocked to 1.5Ghz only just starts to get the edge on Samsung's Galaxy S II 1.2Ghz CPU.
Basically the numbers don't tell you half of the story in the real world.
*delete as applicable.

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