Quad-core or Octa-core: Is there a difference? Here’s what you need to lớn know about the processors packed inlớn your điện thoại thông minh and tabletsFor smartphones in năm trước it was mostly about quad-core power. Now, a year later everyone is moving to lớn octa-core processors. Whether its the Samsung Galaxy S6, the Nexus 6P. or the bargain priced OnePlus 2.

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So is this really a big giảm giá khuyến mãi that we know have sầu more cores powering our smartphones?

Octa-core chips have double the number of processor cores of quad-core chips, right? Yes. So they’re pretty much twice as powerful, right? No. Not even cthua kém. It’s not just about the numbers here.

And this is why some explanation of the difference between octa-core và quad-core is needed…


Octa-core vs Quad-core: It’s not about power

The terms octa-core and quad-core denote the number of processor cores in a CPU. Octa is eight, quad is four. So far, so obvious.

But the key difference between the two – at least when talking about mobile chips in năm ngoái – is how these processor cores are mix up.

In the case of quad-core chips, each core can be put to work simultaneously on a given task, enabling fast and fluid multitasking, smooth 3 chiều gameplay, & super-speedy camera performance, aao ước other things.

Modern octa-core chips, meanwhile, simply have two sets of quad-core processors, which split various tasks between them according khổng lồ type. Most of the time, the lower-powered mix of cores will be employed. When advanced tasks are needed, however, the faster mix of four cores will kick in.

A more accurate term than octa-core, then, would be “dual quad-core”. But that just sounds confusing, và it’s not nearly so marketable. So, octa-core it is.Related: Snapdragon 810 vs its rivals

The table above sầu shows multi-core benchmark performances of quad-core và octa-core smartphones và tablets (image credit: Geekbench 3)

Octa-core vs Quad-core: Purpose

What’s the point of having two sets of quad-core processors handing off tasks to lớn one another, then? It’s all about energy efficiency.

The more powerful a CPU is, the more power it has to lớn draw from a device’s battery. This poses a problem, given that điện thoại thông minh battery giải pháp công nghệ hasn’t advanced at anywhere near the rate of Smartphone processor giải pháp công nghệ.

The result: as smartphones have gotten more advanced, so battery life has plummeted.

The truth, however, is that you don’t really need that much processing power for the vast majority of điện thoại thông minh tasks. Navigating through your trang chủ screens, checking messages, & even browsing the web aren’t particularly power-hungry tasks.

However, HD video, gaming, & photo lớn manipulation most certainly are.

Combined with the fact that CPU manufacturing processes have sầu gotten so precise now that you can squeeze much more onkhổng lồ a single chip, the octa-core concept seems khổng lồ be a practical, if slightly inelegant, way lớn lengthen a modern phone’s battery life without compromising performance where it matters.

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Related: How many cores bởi vì you actually need in a phone?


Octa-core vs Quad-core: Technology

All modern octa-core sản phẩm điện thoại chips are based on ARM’s so-called big.LITTLE architecture.

This big.LITTLE octa-core architecture was announced in October 2011, enabling four low-power Cortex-A7 cores khổng lồ operate with four high-performance Cortex-A15 cores. ARM has iterated on this cài đặt every year since, providing more capable chips on both halves of the octa-core divide.

A number of major sản phẩm điện thoại chip manufacturers have sầu based their efforts on this big.LITTLE, or octa-core, blueprint. One of the first & most notable was Samsung’s own Exynos chip, which made its debut in Octa size – at least in some territories – with the Samsung Galaxy S4.

More recently, Qualcomm switched lớn the big.LITTLE octa-core thiết lập with its new Snapdragon 810 CPU. This is the chip that powers the recently announced HTC One M9 và the LG G Flex 2.

At the start of the year, Nvidia unveiled the Tegra X1, its new super-powerful Smartphone processor that will be at the heart of the company’s push into lớn automotive sầu computing. While the X1’s headline feature is its console-challenging GPU, it also sees a shift to arm’s big.LITTLE architecture. Yep, it’s gone octa-core too.

Huawei’s own Kirin 9trăng tròn sported a similar big.LITTLE cài đặt when it made its way into lớn the Honor 6 late last year, while MediaTek is another chip manufacturer lớn adopt the big.LITTLE architecture with its MT6595 chip.

Related: Samsung Galaxy Tab S2 vs iPad tablet Air 2


Octa-core vs Quad-core: Conclusion

So, what’s the difference between octa-core and quad-core in the modern điện thoại thông minh business? Very little, as it turns out.

That octa-core term is more than a little misleading, as it doesn’t mean the doubling of quad-core multi-core performance that it suggests. Rather, it represents two independently operating quad-core set-ups squeezed together on one chip for the purpose of greater energy efficiency.

Is such an octa-core thiết lập superior to a quad-core one? No, not necessarily. Apple manages khổng lồ get decent energy efficiency & performance out of a dual-core thiết lập, after all.

The lademo news that Qualcomm’s supposed processor of choice for smartphones in năm ngoái will be a ‘quad-core’ based SnapLong 8trăng tròn mix up supports this as well. Having gone octa-core for its top end Snapdragon 810 và the mid-range 615 processors this year, both have had their issues. The 810 had the more high protệp tin overheating issues that we experienced with the Sony Xperia Z3 Plus và the LG G Flex 2.

The problem could lie with Qualcomm’s decision khổng lồ swap four Krait cores for ARM’s Cortex low-power cores, but it’s clear that the company has taken a step backwards khổng lồ hopefully repair the damage done this year và get manufacturers like Samsung baông xã on board.

ARM’s octa-core big.LITTLE blueprint can be seen as one possible solution aao ước several to lớn a long-standing smartphone problem – awful battery life. Once someone solves that particular issue, we suspect that we’ll see the end of this curious dual quad-core thiết đặt.

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If you have any more questions about the differences between octa-core and quad-core processors, let us know in the comments section below.

Chuyên mục: Tin Tức