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What does this mean ?

Central Processing Unit (CPU), or sometimes simply processor, is the component in a digital computer capable of executing a program.(Knott 1974) It interprets computer program instructions and processes data. CPUs provide the fundamental digital computer trait of programmability, and are one of the necessary components found in computers of any era, along with primary storage and input/output facilities. A CPU that is manufactured as a single integrated circuit is usually known as a microprocessor. Beginning in the mid-1970s, microprocessors of ever-increasing complexity and power gradually supplanted other designs, and today the term "CPU" is usually applied to some type of microprocessor.

The phrase "central processing unit" is a description of a certain class of logic machines that can execute computer programs. This broad definition can easily be applied to many early computers that existed long before the term "CPU" ever came into widespread usage. However, the term itself and its initialism have been in use in the computer industry at least since the early 1960s (Weik 1961). The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation has remained much the same.

Early CPUs were custom-designed as a part of a larger, usually one-of-a-kind, computer. However, this costly method of designing custom CPUs for a particular application has largely given way to the development of mass-produced processors that are suited for one or many purposes. This standardization trend generally began in the era of discrete transistor mainframes and minicomputers and has rapidly accelerated with the popularization of the integrated circuit (IC). The IC has allowed increasingly complex CPUs to be designed and manufactured in very small spaces (on the order of millimeters). Both the miniaturization and standardization of CPUs have increased the presence of these digital devices in modern life far beyond the limited application of dedicated computing machines. Modern microprocessors appear in everything from automobiles to cell phones to children's toys.

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Compare CPUs prices from a wide range of UK shops on Mister-Price UK. Browse through the CPUs offers below, showing the best processors from Intel, AMD, Evergreen Technologies and more.

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Dell QuadCore Xeon E5310 1.6GHz/2x4MB 1066FSB

The 1.6GHz Quad Core Xeon Processor E5310 from Dell is designed for multi-processor systems. The quad-core processor architecture places four execution cores, or computational engines, within a single processor. This processor offers excellent

Dell Home
£916.50

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CPUs

Dell QuadCore Xeon E5310 1.6GHz/2x4MB 1066FSB

Dell DualCore Xeon 7030 2.8GHz/2x1MB L2/800MHz 2 to...

Dell 2x Quad Core Xeon X7350, 2.93GHz, 8MB L2...

Dell QuadCore Xeon E5440 2.8GHz/2x6MB 1333FSB

Dell 3.6GHZ Xeon 2MB Processor

Intel Core 2 Duo E6850 Processor BX80557E6850

Dell PE1950 III QuadCore Xeon E5410 2.33GHz/2x6MB...

Intel Core 2 Quad Q8200 - 2.33 GHz, 4 MB L2 Cache,...

Intel Core 2 Duo E8400 - 3 GHz, 6 MB L2 Cache, 775...

Intel E2200 Pentium Dual-Core Processor - 2.20 GHz,...

Dell Quad Core Opteron 2356 (2.3GHz, 2 MB, 75W)...

Dell PE860 Celeron 440 (2.0GHz) 512K 800FSB

Dell QuadCore Xeon E5405 2.0GHz/2x6MB 1333FSB

Dell Dual Core Xeon 3040, 1.86GHz / 2MB processor...

Dell PD 940, 3.2GHz / 2x2MB Dual Core

AMD ATHLON 64 3500+

Intel Pentium 4

Intel Pentium 4

Intel Pentium 4

Intel Pentium 4

AMD ATHLON 64 3200+