HP AMD Dual-Core Processor Optimizer Driver
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HP AMD Dual-Core Processor Optimizer Driver
Terminology[ edit ] The terms multi-core and dual-core most commonly refer to some sort of central processing unit CPUbut are sometimes also applied to digital signal processors DSP and system on a chip SoC. The terms are generally used only to refer to multi-core microprocessors that are manufactured on the same integrated circuit die ; separate microprocessor HP AMD Dual-Core Processor Optimizer in the same package are generally referred to by another name, such as multi-chip module. This article uses the terms "multi-core" and "dual-core" for CPUs manufactured on the same integrated circuit, unless otherwise noted.
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In contrast to multi-core systems, the term multi-CPU refers to multiple physically separate processing-units which often contain special circuitry to facilitate communication between each other. The terms many-core and massively multi-core are sometimes used to describe multi-core architectures with an especially high number of cores tens to thousands . Each "core" can be considered a " semiconductor intellectual property core " as well as HP AMD Dual-Core Processor Optimizer CPU core.
These physical limitations can cause significant heat dissipation and data synchronization problems.
Various other methods are used to improve CPU performance. Some instruction-level parallelism ILP methods such as superscalar pipelining are suitable for many applications, but are inefficient for others that contain difficult-to-predict code.
A combination of increased available space due to refined manufacturing processes and the demand for increased TLP led to the development of multi-core CPUs. Commercial incentives[ edit ] Several business motives drive the development of multi-core architectures.
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For decades, it was possible to improve performance of a CPU by shrinking the area of the integrated circuit ICwhich reduced the cost per device on the IC. Alternatively, for the same circuit area, more transistors could be used in the design, which increased functionality, especially for complex instruction set computing CISC architectures. Clock rates also increased by orders of magnitude in the decades of the late 20th century, from several megahertz in the s to several gigahertz in the early s.
As the rate of HP AMD Dual-Core Processor Optimizer speed improvements slowed, increased use of HP AMD Dual-Core Processor Optimizer computing in the form of multi-core processors has been pursued to improve overall processing performance.
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Multiple cores were used on the same HP AMD Dual-Core Processor Optimizer chip, which could then lead to better sales of CPU chips with two or more cores. For example, Intel has produced a core processor for research in cloud computing; each core has an x86 architecture. Using a proven processing-core design without architectural changes reduces design risk significantly.
For general-purpose processors, much of the motivation for multi-core processors comes from greatly diminished gains in processor performance from increasing the operating frequency.
This is due to three primary factors: This, in effect, pushes for cache sizes to be larger in order to mask the latency of memory. This helps only to the extent that memory bandwidth is not the bottleneck in performance. The ILP wall; the increasing difficulty of finding enough parallelism in a single instruction stream to keep a high-performance single-core processor busy.
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The power wall; the trend of consuming exponentially increasing power and thus also generating exponentially increasing heat with each factorial increase of operating frequency. This increase can be mitigated by " shrinking " the processor by using smaller traces for the same logic.
The power wall poses manufacturing, system design and deployment problems that have not been justified in the face of the diminished gains in performance due to the memory wall and ILP wall. In HP AMD Dual-Core Processor Optimizer to continue delivering regular performance improvements for general-purpose processors, manufacturers such as Intel and AMD have turned to multi-core designs, sacrificing lower manufacturing-costs for higher performance in some applications and systems.
Multi-core architectures are being developed, but so are the alternatives.
An especially strong contender for established markets is the further integration of peripheral functions into the chip. Advantages[ edit ] The proximity of multiple CPU cores on the same die allows the cache coherency circuitry to operate at a much higher clock rate than what is possible if the signals have to travel off-chip.
Combining equivalent CPUs on a single die significantly improves the performance of cache snoop alternative: Put simply, this means that signals between different CPUs travel shorter distances, and therefore those signals degrade less. These higher-quality signals allow more data to be sent in HP AMD Dual-Core Processor Optimizer given time period, since individual signals can be shorter and do not need to be repeated as often.
Also, a dual-core processor uses slightly less power than two coupled single-core processors, principally because of the decreased power required to drive signals external to the chip. Furthermore, the cores share some circuitry, like the L2 cache and the interface to the front-side bus FSB.