Whether you are happy to see it or not, the mobile CPU market is experiencing a "nuclear war."
On April 25th, Qualcomm (microblogging) company displayed its own "Zhenlong" S4 mobile series processor in Beijing, China. In addition to the dual-core version, it also includes its current top-end quad-core products. The S4 quad-core mobile CPU uses Qualcomm's new "Krait" micro-architecture to increase Qualcomm's existing Scorpion micro-architecture CPU performance by 60%.
"Qualcomm does not care about a few cores, but gives consumers a better experience," said Rob Chandhok, president of Qualcomm Internet Services Group.
This sentence means something. At present, Qualcomm's biggest competitor in the mobile CPU market, NVIDIA, has released the quad-core product in the fourth quarter of 2011. At the timing, Qualcomm has fallen behind, and it hopes to pull back a city.
NVIDIA's world's first mass-produced quad-core mobile CPU Tegra3 (Tu Rui), in fact, sealed five "nuclear". This "4+1" design is the selling point of NVIDIA's key promotion when Tegra 3 was released. In addition to the four processor cores, it also has a processor called "Companion". As a coprocessor, when the user performs some simple, low-frequency operations, "Companion" will be based on the user's operation. The situation is turned on or off to achieve low power and high performance requirements.
The "4+1" cores were each given a clear division of labor. When the user executes a simple application, the system only calls the "Companion" coprocessor; when the machine is running a simple 2D game, the system calls one of the quad cores; if the user performs video chat, Flash web browsing, and multitasking, the system Two cores are called; when the four cores are started at the same time, it means that the machine is in full load. At this time, the tasks are usually network multimedia processing or large game programs.
Adopting this structure is the key to the preemptive listing of NVIDIA quad-core CPUs. The semiconductor manufacturer, which was originally known for its graphics cards, has lagged behind rivals such as Qualcomm in the design of mobile CPUs—the design capability means that the CPU and the entire system can be perfectly matched, and at the same time closely related to the manufacturing process and performance of the CPU. .
So far, NVIDIA still insists on adopting 40nm process technology on mobile CPU (in the semiconductor industry, the smaller the number of process processes, the more advanced the process, the better the heat dissipation performance of the CPU). This is the process with the highest yield and the most reasonable cost compared to the current NVIDIA design capabilities in mobile CPU. In contrast, NVIDIA's manufacturing process on the graphics card has been upgraded to 28nm - which is a generation ahead of 40nm.
In order to successfully launch the Tegra 3 with a 40nm process with a large heat generation, NVIDIA carefully increased the product frequency while increasing the number of processor cores. On most Tegra 2 tablets and mobile phones, the processor clock speed is maintained at 1GHz; to Tegra 3, the processor core frequency is only 1.4GHz. The existence of the "with core" processor also shares the burden of the core processor to some extent.
Compared with Tegra 3, Qualcomm's Opteron S4 quad-core processor has a maximum frequency of 1.7GHz and a design specification of up to 2.5GHz. The Samsung (microblogging) quad-core processor Exynos also has a clock speed of 1.5GHz.
NVIDIA's approach is indeed smart if it takes into account factors such as cost, performance and production processes. The Tegra 3, which was manufactured using a 40nm non-leading process, was successfully launched for the first time and received orders from mobile phone companies such as HTC. The One X mobile phone that HTC just released in April this year is using the Tegra 3 processor, which is the first cooperation between the two companies.
However, this practice has also been seized by Qualcomm. When the quad-core version of the Snapdragon S4 was introduced, Qualcomm emphasized its leading position in design and performance. It has a higher frequency main frequency and 28nm advanced manufacturing process. At the same time, it also has a series of designs that can save energy, such as "asynchronous multi-core" technology, which can independently adjust the dynamic clock and voltage of each core according to the processing requirements of users in different usage modes to achieve optimal system power consumption.
In order to solve the power consumption problem of mobile phone screens, Xiaolong S4 also introduced two new technologies: BRITE and GridView. The former can dynamically adjust the backlight brightness and use natural light according to the content being displayed on the screen, which can reduce the power consumption by up to 50% under appropriate conditions. The GridView can intelligently refresh the interface in the form of full page generation. This technology can make pages load faster, smoother scrolling and video playback, and align the performance of HTML5 applications with App apps.
NVIDIA used the Tegra 2 processor to make a big splash in the 2011 mobile phone market. In the fiscal year 2011 to 2012, NVIDIA's net profit was 581 million US dollars driven by Tegra 2, twice as much as the previous fiscal year.
However, NVIDIA also lost some important customers. According to JMP SecuriTIes, a securities company, Motorola Xoom 2 and the most popular smartphone Droid Razr in 2011 used chip products from Texas Instruments (TI); 2011 The world's best-selling Android phone, the Samsung Galaxy S II, uses Qualcomm chips in addition to Samsung's own chips, but does not select NVIDIA products; Amazon (microblogging) hits the tablet product Kindle Fire, also with Tegra processors Pass by.
Qualcomm's strengths in the mobile processor space seem to remain elusive. Although NVIDIA has pioneered the product with its smart strategy, when Qualcomm also has a mass-produced quad-core mobile processor, NVIDIA will inevitably face even greater challenges.
But it is not surprising that the challenger has no chance at all. The strategy is still important. At the moment, whether it is Qualcomm or NVIDIA, the market strategy emphasizes the game performance of the chip: NVIDIA used Tegra 3 to run a large 3D game "Boundary Land" on a technical show (this game used to be only on PC and The game console platform was released. On February 29th, four games optimized for Tegra 3 were announced. Qualcomm also highlighted two 3D games at the launch of the Xiaolong S4.
But not every smartphone user is a fan of big games. When vendors show performance in games, most of the daily applications and business applications are not well-optimized, and even the dual-core processor performance exceeds the quad-core processor. While keen on the core component "arms race", how to optimize for more everyday applications is another key to the next phase of competition.
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