【 Weak current College 】 dual-core CPU and a single core CPU what's the difference? ---Power By 【 China power house network 】

Dual-core is 2 core

Core (Die), also known as the kernel, is the most important component of CPU. Centre for the uplift CPU chip is the core, from silicon to certain production process manufacturing, CPU all computed, acceptance/storage order, processing data from the core implementation. Various CPU core with fixed logical structure, L1 cache and L2 cache, execution units, instruction-level modules and bus interfaces such as logical units will have the layout of the science.

From dual-core technology itself, in the end what is dual core? there is no doubt that dual core should have two physical computing kernel that the kernel of the dominant design applications but may be used for. According to the available information shows that AMDOpteron processor from the beginning designed to add a second core, two CPU cores using the same system request interface SRI, HyperTransport technology and memory controller, compatible with 90-nanometer single-core processor with 940-pin interface. While Intel's dual core but simply use two full CPU package together and connected to the same front side bus. It can be said that the AMD solution is truly a "dual core", while Intel's solution is a "dual core". You can imagine, these two core will inevitably produce a bus seat, performance impact. Not only that, also for future more core integration laid risk, as will increase processor contention FSB bandwidth, become the bottleneck of improving system performance, which is determined by the schema. It can therefore be said that AMD's technical architecture for the implementation of the dual-core and multi-core laid a solid foundation. AMD direct-attached schema (that is, through hyper-transport technology let CPU core directly connected with the external i/o, not through the front side bus) and integrated memory controller technology, making each core has its own cache available task, has its own private driveway pass-through I/O, no problems, the resource the scramble for dual-core and multicore easier. But Intel is more than one core shared L2 cache, and common use front side bus, cores, core processing power enhancements, like the development of the suburbs of Beijing, a large community of more than one community uses the same urban Expressway, sure to encounter the problem of traffic jam.

HT technology is hyper-threading technology, is created by a brilliant PENTIUM4 era weapons, although it was chosen the failure of technology, but on the P4 plays a role in the promotion, dual-core processor is the processor category newly released; HT technology is in processors 2 logical processors, is full use of the processor resources, dual-core processor is the integration of two physical core, is a real sense of the dual-core processor. In fact refer to the modern computer magazine in the parable of HT technology like an it with both hands at the same time cooking chef, and once again put a dish of food-and-drop to the desktop; and the dual-core processor is like 2 cooks fried dishes, while the two food delivered to your desktop. It is obvious that dual-core processor performance and superior. In accordance with the technical perspective PENTIUMD8XX series is not a real sense of the dual-core processor, just two processor integration, but is meaningful PENTIUMD9XX on dual-core processor, and from the very beginning, K8 is the actual sense of the dual-core processor.

Duo (DualCoreProcessor):

Dual-core processor is a processor core integrated two operations, thereby increasing computing capacity. The concept of "dual core", the earliest by IBM, HP, Sun, etc support RISC architecture of high-end server vendors, but because of the RISC architecture Server prices high, narrow, not applied surface caused widespread attention.

The recent gradual heat up the concept of "dual core", mainly refers to the x 86-based open architecture of the dual-core technology. In this context, the main leading manufacturers have two AMD and Intel. Of these, two ideas are different. AMD from the beginning designed to support multiple core. All components are connected directly to the CPU, eliminate system architecture challenges and bottlenecks. Two processor cores is directly connected to the same kernel, a core speed communication between the chip, further reducing the delay between the processor. While Intel uses multiple core shared front-side bus. Experts believe that AMD's schema for easier implementation of dual-core and multi-core, Intel architecture encounter multiple kernel race bus resource bottlenecks.

Dual-core and dual-core (DualCoreVs.DualCPU):

AMD and Intel's dual core technology in the physical structure also has the very big difference. AMD will do two kernel in a Die (Crystal), through direct-attached schema, more integrated. Intel is on a separate Die (wafers) of two kernel package together, so someone will be Intel's programme called "dual core", that AMD's programmes is the real "Duo". From the client perspective, the programme will enable AMD dual-core CPU pins, power consumption indicators with consistent single core CPU, from single core to upgrade to a dual-core, there is no need to replace the power supply, chipset, cooling system and motherboard, you only need to Flash the BIOS software, this motherboard manufacturers, machine manufacturers and end users of investment protection is very beneficial. Customers can leverage their existing 90nm infrastructure through BIOS changes to a system based on dual-core.

Computer manufacturers can easily provide the same hardware, single-core and dual-core version, so that those who want to improve performance and to maintain IT's customers can stability of the environment without disrupting the business upgrade to dual core. In a rack density high environment, while maintaining the power supply and infrastructure investment without changing to the dual-core, the customer's system performance will be greatly improved. In the same system footprint, through the use of dual core processors, customers will receive higher levels of calculation canPower and performance.