Samsung Unveils Cortex A9 Dual-core Mobile Processor
September 7, 2010 8:11 AM
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RE: How come?
9/7/2010 11:03:24 AM
Two cores can perform the same amount of work at half the clock that one can. Half the clock means lower operating voltage.
Operating at peak performance it'll require more power, obviously, but that's very rarely the norm for any device. Also, it'll still finish its load faster.
This on top of the obvious architecture and process improvements.
RE: How come?
9/7/2010 12:46:07 PM
That's pure theory. First, the workload has to be "thread-able". Then there's overhead for synchronization. I don't recall ever seeing any benchmarks showing a dual-core chip doing work with less power than a single core one.
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