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Sunday, 5 January 2014

Octa-Core Processors: Do You Really Need One? : Explained!

Mobile phones are becoming more and more powerful these days with increasing RAM, processor clock speeds, more number of cores etc. The latest entry to this spec race is the all new and fancy Octa-Core processors. Not only do they sound really fast but outwardly they seem to be a really significant boost to performance of our mobile devices. Whether or not is this true, whether the number of cores do matter in the day to day performance, we'll find out in this post. To understand more about processors read my post about mobile processors.




Octa-Core Processors:

Octa-Core processor are mobile processors which have eight core processors. These cores work together to enhance the overall performance of your cellphone. The processor in is smoother with lesser hiccups. The rendering and overall performance is quite nice. All in all Octa-Core Processors seem to be a very nice prospect on paper.  The only thing that remains to be seen is the difference these processors produce in the performance of day to day tasks.


Types of Octa-Core Processors:

Though Octa-Core Processors are relatively new in the market, there are two main types of Octa-Core Processors namely the Exynos processor by Samsung and the other by Mediatek, the "true " Octa-Core Processor. Both these have eight cores in them but the main difference is in the working of these two. The Exynos has got two quad core processors coupled together. The Mediatek one comes with all eight cores as a single unit. The main difference between the two is in the working:


Samsung's Exynos processor has got two separate quad-core proccessors along with a hidden ninth core. This ninth core determines which of the two quad-core processors would work at a time. This means that the processor with the ARM Cortex A-15 architecture works when a resource heavy task. For a more modest task the lessor processor is used which intern saves battery life.  Thus this processor is not what people call the "true" Octa-Core Processor but is none the less quite powerful and is up there among the best out there right now.

On the other hand, the Mediatek Octa-Core Processor has got eight cores based on the ARM Cortex A7 architecture.  This means that there is a significant boost in the performance of the cellphones when compared to the quad-core MT 6589 chipset which has become quite popular right now. However even with all the eight cores working simultaneously, this is still based on a relatively old architecture i.e. A7. So this won't perform as good as the top players right now but still is pretty powerful.

In terms of performance, the Exynos processor from Samsung beats the Mediatek processor hands-down. The quadrant scores indicate it clearly.  Even when uses the devices with these two chipset, for power users, the difference is quite evident. On the other hand, the Mediatek processor is quite cheap when compared to the Exynos processor thus reducing the overall cost of the device. Thus for normal users,  the Mediatek processor would suffice.  Read my post to know which processor you should choose.


NEED:

The biggest question is: Do you really need eight cores in your cell phone when most of the PC's nowadays have just two or four cores? Sadly,  the answer is No, at least for the time being.  Let me explain why. 

Most of the applications present in the market right now make use of just a single core of sometimes two cores. None of the apps use four or eight cores right now. So to have eight cores just does not make sense. It is just wastage of money and resources. Secondly, at this moment, the top notch processor is a quad-core one and not an Octa-Core. So all in all, Octa-Core Processors are only for those hard-core enthusiasts out-there.  The normal people can be pretty much content with dual and quad-core processors.

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