Features of Snapdragon S4 Processors

Snapdragon CPU’s are high performance CPU’s of Qualcomm. Snapdragon soc model numbers like MSM8260A or MSM8230 are little hard to grasp. So Qualcomm has framed a simple protocol for consumers w.r.t its Soc’s (System OChip) for the sake of easy understanding. My phone factor blog has divided its Snapdragon Soc’s into four categories. S1, S2, S3 and S4. S1 being the cheap and low power device whereas S4 is the most powerful device.
SnapDragon S4 soc (MSM8960) is the successor to the Scorpion CPU. S4 soc is based on the new microprocessor architecture called as Krait and it is the second generation CPU from Qualcomm. S4 is well suited processor for high end smartphones and tablets. Let us see what are the new features in this new architecture Krait. The S4 is featured in the Samsung Galaxy Tab 2.

Features of Snapdragon S4 (Krait) Soc:
– first mobile processor to be manufactured using the latest 28nm architecture
– new pipeline architecture increases the performance of krait over 60% compared to the existing qualcomm’s scorpion CPU micro-architecture.
– different configurations available like Single/Dual/Quad core with frequency range from 1.5GHz upto 2.5GHz per core and supports asynchronous symmetric multiprocessing for better performance and power efficiency.
– incase of a dualcore/quadcore the cpu’s are capable to work independently.
– includes dual-channel memory for processor to handle large bandwidth requirements in multicore systems.
– high performance Adreno GPU (Adreno225/ Adreno305) for high quality video and console quality gaming
– advantages like frequency scaling, low power consumption, better thermal performance and smaller size are achieved because of 28nm architecture.
– first fully integrated 2G/3G/4G Modem for fast internet browsing and app downloads. Supports standards like LTE multi mode, HSPA+, CDMA2000 1X, 1xEV-D0 Rel A/B, GSM, GPRS, and EDGE.
– uses ARMv7 Instruction set architecture for advanced process technology.
– Qualcomm’s hexagon DSPs low power engine used for high power efficiency.
– Connectivity options like GPS, Bluetooth4.0 WiFi and FM supported.
– Integrated HDMI v1.4 interface
– Video: HD 1080p, 30fps video playback and streaming

S4 is available in the following Qualcomm products:
APQ8064, APQ8060A, MSM8960, MSM8660A, MSM8260A, APQ8030, MSM8930, MSM8630, MSM8230, MSM8627, MSM8227, MSM8625, MSM8225

Video showing Snapdragon S4 QuadCore processor:

Video: Windows RT running on ARM based Snapdragon S4 Chipset demoed in Computex 2012

COMPUTEX 2012 has kicked off from yesterday in Taipei, Taiwan. This event is one of the largest computer expo held in the world.
Microsoft’s brand new Os i.e Windows 8 has three versions classified based on the processor types Windows RT for ARM, and Windows 8 and Windows 8 Pro for Intel x86 chips. Last week the company has officially released its Windows 8 Release preview in the market. At computex most of the computer/tablet manufacturers are displaying their latest devices running on this version of the Windows Os. Until now most of the tablets powered by ARM based chipsets are running on Android platform. Next half of this year will see some more beautiful tablets, laptops running on the latest windows metro style os.
Qualcomm presented one of the world’s first windows 8 tablet running on ARM platform. Qualcomm’s Krait architecture based Snapdragon S4 soc (system on chip) is built on ARM Cortex A15 processor. The video below shows how smoothly the Windows RT is running on the new ARM platform.

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Features of Snapdragon S4 Processors

Snapdragon CPU’s are high performance CPU’s of Qualcomm. Snapdragon soc model numbers like MSM8260A or MSM8230 are little hard to grasp. So qualcomm has framed a simple protocol for consumers w.r.t its Soc’s (System OChip) for the sake of easy understanding. It has divided its Snapdragon Soc’s into four categories. S1, S2, S3 and S4. S1 being the cheap and low power device whereas S4 is the most powerful device.
SnapDragon S4 soc (MSM8960) is the successor to the Scorpion CPU. S4 soc is based on the new microprocessor architecture called as Krait and it is the second generation CPU from Qualcomm. S4 is well suited processor for high end smartphones and tablets. Let us see what are the new features in this new architecture Krait.

Features of Snapdragon S4 (Krait) Soc:
– first mobile processor to be manufactured using the latest 28nm architecture
– new pipeline architecture increases the performance of krait over 60% compared to the existing qualcomm’s scorpion CPU micro-architecture.
– different configurations available like Single/Dual/Quad core with frequency range from 1.5GHz upto 2.5GHz per core and supports asynchronous symmetric multiprocessing for better performance and power efficiency.
– incase of a dualcore/quadcore the cpu’s are capable to work independently.
– includes dual-channel memory for processor to handle large bandwidth requirements in multicore systems.
– high performance Adreno GPU (Adreno225/ Adreno305) for high quality video and console quality gaming
– advantages like frequency scaling, low power consumption, better thermal performance and smaller size are achieved because of 28nm architecture.
– first fully integrated 2G/3G/4G Modem for fast internet browsing and app downloads. Supports standards like LTE multi mode, HSPA+, CDMA2000 1X, 1xEV-D0 Rel A/B, GSM, GPRS, and EDGE.
– uses ARMv7 Instruction set architecture for advanced process technology.
– Qualcomm’s hexagon DSPs low power engine used for high power efficiency.
– Connectivity options like GPS, Bluetooth4.0 WiFi and FM supported.
– Integrated HDMI v1.4 interface
– Video: HD 1080p, 30fps video playback and streaming

S4 is available in the following Qualcomm products:
APQ8064, APQ8060A, MSM8960, MSM8660A, MSM8260A, APQ8030, MSM8930, MSM8630, MSM8230, MSM8627, MSM8227, MSM8625, MSM8225

Video showing Snapdragon S4 QuadCore processor:

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What is the difference between the CPU and GPU?

Like a PC now most of the Smartphones specification includes a GPU (Graphics Processing Unit) along with the CPU (Central Processing Unit). Companies like IntelARM and AMD produce the CPU and companies like Nvidia, AMD’s ATI produce the GPU.
CPU and GPU are two very vast and complex topics which cant be explained in one article, my attempt is to give you an overview of the GPU and how it differs from the CPU. So please have the below noted brief overview on both these amazing technologies.

 

  • What is a CPU?

 

By the name one can guess what CPU means, it is a central processing unit. It means each event which occur in a system is brought to the CPU for computation. For example a simple MP3 player is a system, it include a small LCD display, buttons, memory, headset, battery and many other internal things which are not visible to the user. Now i am writing this article with the help of a keyboard, so every letter pressed is sent to the CPU for execution. The main execution unit consists of the Arithmetic and Logic Unit (ALU). This unit consists of complex algorithms written by the ALU engineers and these algorithms are executed by the transistors for the final output. CPU needs clock to run, i can relate it to the heart beats. CPU is connected to the other members of the system via bus on a printed circuit board. Most of the CPU manufacturers integrate peripherals like RAM, ROM, input/output ports etc along with CPU in a single chip and such chips are called Microcontrollers. CPU performs Integers calculations like add, sub, mul, div and other logic operations. It cant calculate a floating point, the main reason could be that floating point algorithms are more complex than arithmetic algorithms. So as the complexity increases the power consumption also increases hence dissipating more heat and reducing the life cycle of it.

 

  • What is a GPU?

 

GPU is also a processor made up of complex algorithms and millions of transistors but it is designed for a specific purpose, i.e Graphics Processing. Even GPU require clock to operate and it is much faster than the CPU. Because its computation methods are very complex which includes parallel processing, geometry, trigonometry and floating point calculations that re necessary for graphics rendering. It consists of 100′s of cores and it can be seen on a Graphics card or video card which are used in the systems. Main application of a GPU is to render/translate the stored Image/Video onto display unit as quickly as possible. Since GPU works a lot faster than a CPU it dissipate more heat and hence requires a cooling unit. If i play a video in my smartphone, GPU starts storing the video part by part in the frame buffer (like a RAM) in background and triggers these parts one by one to play the video. So GPU does lot of computations before a image or video is displayed. And these computations are performed very fast. The speed is achieved by its complex pipeline architecture and parallel processing ability. Modern GPU use many filter and shaders to display the image more cleaner and crisper.

Best combination of CPU and GPU delivers the best performance and throughput of the system.

Below picture shows the visual realism achieved from modern GPUs like NVIDIA GeForce 8800 GTX.

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