All About Dual-Core Processors
Dual-core refers to a CPU that includes two complete execution cores per physical processor. It combines two processors and their caches and cache controllers onto a single integrated circuit (silicon chip). It is basically two processors, in most cases, residing reside side-by-side on the same die. Dual-processor, Dual-core, and Multi-core: Keeping it straight Taking Advantage of Dual-core Technology Complete optimization for the dual-core processor requires both the operating system and applications running on the computer to support a technology called thread-level parallelism, or TLP. Thread-level parallelism is the part of the OS or application that runs multiple threads simultaneously, where threads refer to the part of a program that can execute independently of other parts. | Key Terms To Understanding Dual-core dual-core CPU processor integrated circuit Related Webopedia Categories: |
Even without a multithread-enabled application, you will still see benefits of dual-core processors if you are running an OS that supports TLP. For example, if you have Microsoft Windows XP (which supports multithreading), you could have your Internet browser open along with a virus scanner running in the background, while using Windows Media Player to stream your favorite radio station and the dual-core processor will handle the multiple threads of these programs running simultaneously with an increase in performance and efficiency.
Today Windows XP and hundreds of applications already support multithread technology, especially applications that are used for editing and creating music files, videos and graphics because types of programs need to perform operations in parallel. As dual-core technology becomes more common in homes and the workplace, you can expect to see more applications support thread-level parallelism.
Intel & AMD Dual-core Desktop Processors
The Intel Pentium Processor Extreme Edition 840 running at 3.2 GHz and Intel 955X Express Chipsets are being built into computers that are now entering the market. This is Intel's first desktop dual-core product supporting Hyper-Threading Technology. Processor features include the following:
- Hyper-Threading Technology: Enables you to run multiple demanding applications at the same time.
- Intel Extended Memory 64 Technology: Provides flexibility for future applications that support both 32-bit and 64-bit computing.
- Dual-Core: Two physical cores in one processor support better system responsiveness and multi-tasking capability than a comparable single core processor. [Source: Intel Dual-core Desktop Processor]
AMD also announced its line of desktop dual-core processors, the AMD Athlon 64 X2 processor family. The initial model numbers in the new family include the 4200+, 4400+, 4600+ and 4800+ (2.2GHz to 2.4GHz).The processors are based on AMD64 technology and are compatible with the existing base of x86 software, whether single-threaded or multithreaded. Software applications will be able to support AMD64 dual-core processors with a simple BIOS upgrade and no substantial code changes. [Source: AMD Dual-core Desktop Processor]
Both companies have also announced or released dual-core processors for servers and workstations as well.
Did You Know...
"If we assume that the number of transistors per processor core remains relatively fixed, it is reasonable to assume that the number of processor cores could follow Moore's Law, which states that the number of transistors per a certain area on the chip will double approximately every 18 months." [Source: Intel Software network/Dev]
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