Three mobile quad-core chip analysis

Mobile device hardware can be described as a year to a new level, from just popularity of last year's dual-core, quad-core this year became the darling of the market, following the world's first quad-core phone HTC One X listed, have been there like Samsung GALAXY SIII Meizu MXThe quad-core version of the variety of quad-core phone available. Various attitudes toward its quad-core chip is also very different in their own technology is how much high-end products is how much mature, and is it really? Here we have to do a quad-core chips currently on the market already have or already molding the upcoming release of an interpretation, hoping to help users better understand the quad-core chips.
Architecture
The first thing to come to a clear interpretation of the quad-core chips, the underlying structure of the product. The quad-core chip has been listed on the market two Nvidia's Tegra 3 and Samsung Exynos 4412, respectively, as well as high-pass into a piece of the APQ8064 as well as rumors have not listed MTK MT6588. These four products are used from ARM's Cortex-A architecture development. Cortex-A series V7 instruction set is a collection of products, including A5, A7, A8, A9, A15, performance with the larger of the digital enhanced. The above-mentioned four quad-core chips, MTK MT6588 uses a Cortex-A7 quad-core architecture, Tegra 3 Exynos 4412 A9 architecture, Qualcomm APQ8064 is based on the A15 architecture Krait architecture from the secondary development from the architectural point of view, MTK moviles baratos tend to cost-effective, which is in line with its market positioning, NV and Samsung have adopted the technology is more mature A9 architecture Qualcomm tend to be more performance A15.
In terms of the general direction, the the Qualcomm APQ8064 more advanced, after all, is ARM's new A15 architecture developed from. However, chip manufacturers for the quad-core view different, like Taiwan Alliance fat Division (MTK) such enterprises think that the price is king, therefore choose cheap four-core products, such chips authenticity can perhaps not such a high-end dual-core chip, but the price advantages It will be very obvious.
NVIDIA (Nvidia) Tegra 3 quad-core processor chip is the world's first mass production of this chip A9 architecture, the single-core up to 1.5GHz TSMC 40nm process technology to keep up with the same generation Tegra 2 process, as opposedinto pieces has two quad-core processor Samsung 4412 and Qualcomm APQ8064 it, Tegra 3 manufacturing process is the most backward, only 40nm. As we all know, the smaller the process, the more the number of transistors contained within the unit area, the smaller the process, the overall performance of the processor will be more powerful, control electricity costs will be lower.From the current Tegra 3 can only count on Nv stepping stone class products to try a quad-core market performance, there is no advantage at all.
But Tegra 3 using different power saving technology, as we all know the life of the phone by the drag of the battery technology is becoming shorter and shorter.Therefore, the more power quad-core chip how to ensure the life of the moviles libres baratos phone to become the focus of attention of all chip manufacturers.Nvidia Tegra 3, first proposed the concept of 4 +1 core, inside a CPU, in addition to the four main core for performance, a slave of the core, which is 4 +1 inside. "The slave core can work the phone Standby, telephone, text messaging and other basic jobs, due to the highest frequency of only 500MHz, it can significantly reduce energy consumption.
Graphics processor, Tegra 3 with a GeForce ULP, compared to their own previous generation graphics processor, the processing unit, from the previous generation 8 units to 12 units, official data is 500% performance increase, but the actualactual performance to enhance the rate of this GPU test and no nominal value, of course, this requires a suitable driver.
Samsung Exynos 4412 is the global paragraph shipping quad-core processors, and Tegra 3, 4412 A9 architecture, to reach 1.4GHz single-core HKMG 32nm process technology. From the process, it has broken through the 40nm mark, compared to the Tegra 3 has significantly improved performance. 32nm brings the most significant increase in terms of energy consumption, Samsung fatal in 4210 before 45nm era, standby power consumption, but the schema updates to 32nm, this issue has been quite changed, according to the official to say, the energy consumption is reduced by 20%.4412 to support the memory is dual channel LPDDR2 1066, compared to only a single-channel LPDDR2 1066 Tegra 3 is much better.
And Tegra 3, 4412, is seen as the Samsung mature dual-core to quad-core of the mature product of excessive, in November last year, Samsung Electronics has released the new Exynos 5 Series processor, better ARM Cortex-A15 architectureto build, but the process is still 32nm.
Graphics processor, the Samsung 4412 is equipped after "overclocking" Mali-400MP, compared to dual-core Mali-400MP, 4412 on the original core frequency upgrade from previous 266MHz to 400MHz, in order to achieve the graphics processing power However, compatibility unstable shortcomings of its graphics processor, which is mainly due to the support of texture single and is not compatible with many mainstream effects caused. Compatibility issues will be reflected in some of the big game in.
Qualcomm processor is described in this article, three quad-core processors, the latest released volume production shipments so far have not, and the the Qualcomm official spokesman said the Global Distribution of this processor in September.And Qualcomm belated quad-core processor performance is not general, the Krait architecture similar to the Cortex-A15 ARM licensees of Qualcomm developed, single-core 1.5-1.7GHz, up to 2.5GHz, 28nm process technology away from the basic parameters tosee, 8064 is clearly better than the more advanced of the two processors process.
Terms of energy consumption, according to the official description said, Krait architecture performance equivalent to Cortex-A15, but less in terms of energy consumption, 8064 using asynchronous quad-core technology, according to the situation of the mobile phone to run the program automatically increase or reduce kernel workquantity, so as to achieve the purpose of reducing energy consumption. Official data show that, compared to the first generation of Scorpion architecture, Krait 65% reduction in energy consumption.
Graphics processor, the APQ 8064 with Adreno 320 GPU Qualcomm Adreno series GPU in the current state-of-the-art products, according to official said it can provide and Microsoft XBOX 360 or Sony PS3 similar to the graphics processing power, which is why millet releasedm 2 when claimed the millet phone graphics processing ability XBOX reasons. Because there is no real test can only be explained, according to official data, the Qualcomm Adreno 320 graphics processing power will be the first generation Adreno 15 times.